(1 to 100 of 263 replies)
SeedyBee2008 4:09am, 29 August 2011
They are now on sale!

20110829-CDB-01003 by SeedyBee2008

Items Included in Retail Pack...
Pixel Enterprises Pouch Very nice; holds all but Mini-Stand and Instructions
King transmitter (TX) With wrist-strap and hotshoe cover.
King receiver (RX) With wrist-strap. One required for each flash.
Connecting cable (PC-1/4) PC Screwlock to 6.5 mm phone jack.
Connecting cable (PC-3.5) PC Screwlock to 3.5 mm Mini phone jack.
USB 2.0 cable Type A male to type Mini B male, 1.5m.
Receiver holder Adhesive clip for mounting an RX used with a PC cable.
2nd hotshoe protector For protecting the RX hotshoe.
Mini-stand Pixel Universal Mini-stand, with wide base and lock-pin hole. ¼ inch socket underneath for mounting on stand.
Instruction manual

External Features...
• Label “Pixel King ETTL Flash Trigger” with “Transmitter” or “Receiver”.
• RX: Hot shoe supporting Pixel’s ETTL mode.
• TX: Hot shoe is for Pixel’s accessories, and is not a pass-through for a flash.
• “Transmitting/Operating” wrap-around indicator.
• “Channel setting” wrap-around indicators L1, L2, L3.
• “Group setting” wrap-around indicators A, B, C.

Front End
• TX: Clear lens with a Focus-Assist light.
• RX: Red lens, no light.

Rear End
• “Transmitting/Operating” wrap-around indicator, blue for transmission, red for standby.
• Hole for attaching a safety strap.

Left Side
• “Channel setting” wrap-around red-flash indicators.
• Button for setting channel.
• PC-sync screwlock socket. TX: No function. RX: Sync-out.
• USB Mini socket for a firmware update program. It can also provide an alternative power source.
• The RX socket can provide a shutter release.

Right Side
• “Group setting” wrap-around red-flash indicators.
• Button for setting Group.
• 2-position main switch, Off – On.

• TX: Hot foot With locking ring and locking pin. This is the only way to connect with the camera.
• RX Cold foot with excellent large knurled locking ring, locking pin and ¼ inch socket for attaching to stand.
• Battery recess cover

Pixel has provided excellent access to the King’s controls and indicators, including the on/off switch. It's gear to grace any photographer's arsenal.

Clive's review as a PDF
New link 14 Sep 2011

Elv's Review is 11 posts down...
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(1 to 100 of 263 replies)
Anthony HB2007 PRO 4 years ago
Everything listed but the price!
Can they be used in high sync speed?
SeedyBee2008 Posted 4 years ago. Edited by SeedyBee2008 (member) 4 years ago
Anthony - Pixel’s own eBay pricing with free shipping is as follows. Other merchants may differ.
Pack TX RX Pack Price
Basic kit 1 1 US$180
3-piece kit 1 2 US$285
4-piece kit 1 3 US$390
Supplementary Remote
0 1 US$125
SeedyBee2008 4 years ago
Paul - The default mode is HSS.
Mike Ladines 4 years ago
Speedy - can't wait for your review. I will get this soon.
Mencho22 [deleted] 4 years ago
I am waiting for my Kings too!!! Very excited.
And I only payed USD 160 with registered shipping. Hope they will arrive soon to test them

BTW, this is where i bought them...

Once i receive them i will try to upload my review
SeedyBee2008 Posted 4 years ago. Edited by SeedyBee2008 (member) 4 years ago
Review: Pixel King latest version (PDF)

binolardo 4 years ago
Great review.

I heard they were coming out with a zone-controller type thing for these...is that still true?
SeedyBee2008 4 years ago
Nickaro - Two add-ons are listed in my review.

One is called N-TTL Controller, and that's all I know about it.

The other is the Opas which Elv is having great fun with.
elv0000 Posted 4 years ago. Edited by elv0000 (member) 4 years ago
my Review -

Pixel King

I've been using the new Pixel Kings for a week or so now and I'd have to say I've been very impressed.

The first thing to note as its probably most significant, is they did not achieve ETTL ratios as yet, so they are not a complete alternative to Pocketwizard, but what they have achieved is still fantastic at the price and will likely satisfy a lot of people.

What They Do -

- HSS - thats FP High Speed Sync with Canon or similar ETTL flashes
- Hypersync - thats high speed sync with manual flashes and Studio lights
- Second Curtain Sync

- Remote Manual Power Levels through the Camera Menu -

Allows you to remotely control Manual power settings of Canon EX II flashes through the camera flash control menu (up to 3 groups).

See an example in the video here - youtu.be/r2xn8piXLQU?t=6m48s

- ETTL Off Camera -

With any Canon EX flash (and some other brands) for one or more flashes (in one group), with flash exposure compensation from the camera.

- FEL - Flash Exposure Lock works with any compatible ETTL flash.

Updates from the Beta models -

No Pass Thru Hotshoe on TX

The TX hotshoe has been completely disabled so no flash will fire on the Tx shoe now.

I think this was a good decision because we already had concerns with the Beta models that the flash on camera was causing issues. Now there is no stress put on the TX case so its likely to be reliable and last a lot longer.

Pixel also mention a possible N-ETTL zone controller type device in the manual but there is no information on that as yet.

AF Focus Asisst Light

Pixel King AF Assist Light

This is Pixels first attempt at an Auto Focus Assist Light, Unfortunately (although I appreciate their efforts), I'd have to say this one is not quite there yet.

The light comes on and off when it is supposed to so thats a good start . The issue is that its just a plain white LED light that does not project any contrast. Its too weak in most cases to have any real effect on helping focus, but at the same time its really quite bright for the person whos eyes your shining it into so it may cause issues there.

There is also no on/off switch for the AF light (unlike the beta model) so depending on your camera body it may not even be possible to disable it. A small piece off gaffer tape can fix that easily but its wasting battery power then for no reason.

I'm sure we will see improved versions in the future. I must admit it has helped a little in some close up product shots so I'm not ready to cut the wire on the LED just yet.

RX Locking Ring (& Pin)

Pixel King - Tx Locking Ring & Pin

This is a very welcome addition as Pixel's locking rings have been too small on all of their products. This ring is much better but it could be bigger still.

The other interesting thing here is the Rx locking pin which is a great addition, possibly a first?

The Tx locking ring has not been updated though and that's an issue, because with the shape of the King/Bishop case I've found they are already the most difficult trigger to get on and off the camera. The tiny locking ring only compounds that. At the least they could do with the new Rx ring if not an even larger one.

Test fire button added

This would have been make or break for anyone using a light meter so Pixel have added a test fire button using the original channel and group button pressed at the same time (same as the Bishop's).

I have suggested a number of times they use just the one Channel button as the test fire button but I doubt they will change that again now. Pressing 2 buttons at once is not that bad, it would be more convenient with one though.

Battery Lids fixed

The clip on some Beta unit battery lids were quite weak and allowed the lids to slide off easily. This has been fixed with a stronger clip so no issues there anymore.

Faster Group/Channel Selection

To set the Groups or Channels on the triggers directly the Kings still use one button to scroll through all the options. This is now quicker as you don't have to hold for 2 seconds before starting to change settings, just tap the button a second time and change.

The single button / scroll has hopefully seen its last days though as Pixel's latest manual trigger (the Opas) now have a button for each group!

Second Curtain Sync - Off Camera

This is no small feat, one of very few radio triggers which allow second curtain sync off camera with Canon. This requires a camera body with a flash control menu to select the rear curtain option.

USB port Firmware Updates

The USB port is now enabled and the Firmware downloads available on the Pixel site. The instructions are up here and it appears quite simple - pixelhk.com/Down/Help.aspx

Shutter Release

The King manual mentions an optional USB cord for shutter release, we have the cord but so far the shutter release is not working. Hopefully Pixel are working on this.


Pixel King & Opas - Compatible

The Kings are now compatible with Pixels latest manual triggers the Opas transceivers. This is very significant as it shows Pixel have started considering cross and backward compatibility. Hopefully no more buyers remorse every time the latest and greatest incompatible trigger is released.

The Kings TX will fire the Opas with corresponding groups and channels. But not only that, I discovered Hypersync HSS will still work using a manual Opas receiver with a King as Tx!

The manual triggers work beautifully in combination with the ETTL flashes, without any negative effect on the TTL metering.

One bug I have found though is they King will not test fire the Opas. I hope this is something Pixel will remedy.

The current Kings appear not be compatible at all now with the previous Knights ETTL triggers. This is a bit unfortunate but the Knights could not work with the Canon flash control menu anyway so its not the biggest issue as you'd likely switch to all Kings anyway

Build Quality -

Pixel products have always tended to be on the lighter side. You get the feeling everything could do with just a little beefing up.

We had some issue with the Beta cases but hopefully that was mainly due to them being beta units that were not checked by quality control. Soldering of the battery terminals has been another issue, but again hopefully this is mainly just the beta units. The Knights have held up very well over time otherwise.

Its not uncommon to see the metal ETTL feet attached to the case on a slight angle either , this has been common with many Pixel products.

General Use -

I've been using them for a week or so now and I'd have to say I've been impressed. No signs of misfires or communication issues. They work very fast now so its much like using manual triggers

I'm sure they do still use more batteries than manual triggers, but again it looks like they have made improvements there too. The main thing is they use common AA's anyway, so batteries like Eneloop rechargeables are ideal.

Hypersync HSS -

Hypersync HSS is working well with speedlights, the timing is correct for a full frame at any shutter speed up to 1/8000th (flash set to full power)

There is no adjustment for Hypersync timing though (like PW) so different monolights etc will achieve different results, you will have to try and accept what you get there.

Optic Slaves - TIP - One thing I found, if your using Canon speedlights, even if they are set to manual they do still put out a pre-flash. So if your trying to fire extra flashes or your studio strobes via optic slave they will not fire in sync!

I was able to use the S2 slave mode on YN-560's flashes to overcome this pre flash. The only other option is to connect the Canon flashes via a sync cord to the Rx and not directly to the hotshoe (so you would loose remote power control).

Ganging Flahses in ETTL

MF-X Multi Flash Bracket - Hotshoe Triggers

The Kings are ideal for grouping flashes together in ETTL or manual. You can group as many flashes together as you like and the ETTL exposure will be correct, as if it was just one big flash. Dial the FEC up and down for all of them together from the camera, use HSS as well and even remote manual setting with HSS (or even second curtain sync).

ETTL Ratios

There is currently no option for adjusting ETTL ratios, its beyond the scope of what the Kings are currently designed for and best to look at other trigger options if adjusting ratios are really important.

Having said that though I think ratios still deserve a mention here because I found its actually harder to Not acheive a ratio if you try using more than one ETTL flash on opposite sides of an object, key and fill light etc. This is because the King fires all flashes set to ETTL at the same power level (Canon call this A:B:C).

So if we have 2 identical bare flashes (no modifiers) on opposite sides of an object, set at exactly the same distance from it, they should produce an even 1:1 ratio. But as soon as you move one further away the light will reduce on that side. The closest one will always meter correctly (key light) and the other less (fill light). So placing modifiers or ND filter etc on one light will also reduce its output and ratio to the main light.

What does all this mean?... the main reason for ETTL is run and gun shooting, an assistant for example can be holding the Key light off camera in a softbox. But you still want some Fill, possibly or often likely, on camera Fill. Unfortunately you can't just dial in a ratio with the Kings, but you can gel or diffuse (like and Orbis ringlight) or increase the distance of the fill light to create that ratio.

The worst case scenario is you will have less of a ratio than you would like, the key light will still meter correctly regardless.

The other option is to set your fill light on camera to manual where its easy to adjust. The Key is in the softbox on ETTL with the assistant (or lightstand). The on camera flash must be on a bracket (and King RX) as you can't mount it directly to the camera with King Tx in the hotshoe

Conclusion -

The Kings are already selling for less than $150 a set on Ebay, if your after budget ETTL, or remote manual power (and you have the EX II flashes for that), they are a bargain (there is no competition at that price).

The main thing holding them back from being a complete alternative to PocketWizard, Radiopopper and likely the new Phottix Odin is the lack of ETTL ratios. But that is not something everyone is needing anyway. What the Kings do they do well.

At the price its certainly hard to justify a long ETTL cord anymore!
Kinematic Digit PRO 4 years ago
I should be getting my set soon. I helped re-write the english manual for them. Still a few errors got through but hopefully a much easier read for most english speaking countries.

I didn't change their technical jargon as I didn't have a physical unit to fully understand what they were trying to say, but I'm sure between SeedyBee2008 and I I'm sure they finally have a manual that makes some sense.

It was my first direct relationship with Pixel on this, so hopefully in the future more collaborative efforts will make their manuals a little more user friendly for english speaking customers.

Look forward to playing with them.
SeedyBee2008 4 years ago
I have been testing pre-production units, and now full commercial units for some six months. I love them, and think that Pixel’s engineering is awesome.

The King is designed for owners of Canon cameras with Flash Control Menus, and Mark II Speedlites. They are certainly not limited to that, however, but it is the key to understanding the design.

Flash control techniques include ETTL with FEC, remote Manual and local Manual. But there’s more. Nearing release is the Pixel Opas, a CB-radio style trigger designed for professional use. It can work with the King, and handle a wide range of functions – 500m/800ft, remote camera firing, shutter release, studio lights using HSS or hypersync. 500m? Think a second behind-goal camera on a sports field. Or a distant flash-lit architecture behind a wedding group. Or simple never-miss reliability.

There is one limitation – the ETTL is A+B+C single-group ttl. No automatic A:B ratios. Fortunately, mixed-mode ETTL/Manual works fine and is easy to set up.

Then there’s the Sync capabilities. HSS, the default, or 1st curtain, or 2nd curtain. Yes, Canon OCF 2nd-curtain sync with no fuss. Simple triggering of many types of flash is also available, and can be extended by the Opas add-on.

FEL, AF-Assist, Test-fire, external power supply all work. Strap a USB battery pack onto your Flash battery pack, and both flash and trigger will last all day.

Oh, and the firmware can be updated. Actually, 60D owners will need to update to fix a compatibility problem, but it’s easy to do.

Reliability seems to be good, and Pixel’s response to our feedback has been swift and adequate. Even the Instruction Manual makes sense!

I’m sold! Another set is being bought to give me 4 receivers and 2 transmitters. That way, I have a spare TX as backup, at little more than the cost for 2 extra RX.

Latest version of my full review: Pixel King Review (PDF)
elv0000 4 years ago
Just added my review, back up there ^
SeedyBee2008 4 years ago
Thanks, Elv - that's a great writeup.
Night Mode 4 years ago
Thanks for the reviews. Has anyone tried the Kings with 3rd party E-TTL flashes, esp. the new YN-565EX?
LayerMask 4 years ago
Tx guys!

Elv, I take your points about effectively one group when using ETTL. Can you dial in say negative FEC on, for instance, an on-axis fill unit, on the unit itself, while still having Global FEC from the cam screen?

Next up, power output (drop) under HSS. It's one thing getting the pulse timing long enough, it's another minimising the efficiency loses. Do you have a sense yet of how many stops power loss is incurred?

Thanks a lot! (Tho' most of my speedlites are not series 'II' - so, I'm not rushing in!)
SeedyBee2008 4 years ago
LayerMask - My understanding is that FEC is applied in the camera, not in the flash. In a Master/slave situation, ony the Master's setting is taken into account by the camera, and over-rides the camera's own settings. Any slave settings seem to be ignored.

As the King is designed to implement camera control of flashes, it seems to ignore all flash settings (there are no "Master" flashes). I tested this by setting different FECs on a 580EXII and two 430EXII - none of them affected the on-camera FEC.

My tests of HSS output produced a 1.5 stop drop. Canon's HSS is nearer 2.5 stops down.
elv0000 4 years ago
Thats a good point I forgot! -

No you cannot set FEC directly on the flash unit. As Clive says it gets ignored.

You can set manual power level directly on the flash though (thats a Canon Ex flash so you can use FP HSS etc as well). So one flash can be set to ETTL with FEC from the camera and other flash set to manual at the same time.

FP HSS output can vary considerably from flash to flash. As you know its not really designed to beat the sun, although you can do that up close or bare. Its mainly just for the convenience of using wider apertures for portraits etc in bright ambient light. The Hypersync HSS can be used with monolights to kill the sun though.
Labowski72 4 years ago
ELV so you are saying that they DO support mixed modes : ETTL and Manual. It says in the manual (under the function list) that they don't support this.
LayerMask Posted 4 years ago. Edited by LayerMask (member) 4 years ago
Tx Guys,
The FEC thing is different to Canon Wireless without the Kings then (where you can vary compensation even within one group).
re HSS, even PW after tuning, don't claim less that 2 stops loss (if I understand their reporting correctly(?)).
These do sound interesting, but without 'II' series units all round, I think I'll stay with my RF-602s for the monment. Edit; Maybe the Odins will speak to my old 550s?
Tx again.
elv0000 4 years ago
Labowski72 -

They don't support mixed modes (ETTL & Manual) in the sense that you can't choose to set one group to ETTL and another to Manual through the camera menu.

But I'm pretty sure I was able to set one flash to a manual power level directly on the flash itself, while another flash was set to ETTL, and the ETTL metering is not effected, the manual light just adds to the exposure as you would expect.
Max Barros www.barrosinc.com Posted 4 years ago. Edited by Max Barros www.barrosinc.com (member) 4 years ago
So the kings work on simple dummy trigger with a flash on TTL on the hotshoe and another one on a lightstand on manual??

or is the no pass through transmitter an no unless the transmitter is off? or what is the point?

I also want HSS to work with maybe more than 1 flash.

maybe the rooks are what I need?? With so many chess pieces I don't understand the differences....
Labowski72 4 years ago
Thats great, I hadn't thought to try this. Great review by the way. What is that bracket you use for ganging flashes, it looks like it launch missiles.
elv0000 Posted 4 years ago. Edited by elv0000 (member) 4 years ago
Max - The Kings are the one you want if you want the most functions off camera. They do remote manual power setting from the camera (up to 3 groups) or ETTL in one group. All with HSS.

All the other Pixel triggers only do manual off camera, and no remote power levels or HSS. A couple allow an ETTL flash on camera though.

Adrian - no problem, The brackets I custom make, I can't say too much on flickr but drop me an email if you like any details.
SeedyBee2008 4 years ago
Layermask - AFAIK, Canon provides for a Group C FEC, in addition to the master FEC applied to the output of both groups A and B. (The "A:B C" ETTL option). The Kings only work with A+B+C gloabal group.

I took test shots using 580EXII, then 550EX. The results were effectively the same. On-King HSS yeilded a 1.5-stop drop compared to on-camera x-sync at same EV. Comparison was by viewing pixel intensities.

That confirmed my practical sports photography experience. I have seen no claims by Pixel on this question.

If you want mainly Manual levels, then Mark IIs are very desirable. ETTL works just fine with earlier Speedlites.

I would not expect anyone to add in programming hooks to a Speedlite's firmware if Canon has not done so.
SeedyBee2008 4 years ago
Labowski72 - Elv0000 is right about setting a manual level to a Speedlite on a King RX.

Although it is not in the manuals, you can do the same under Canon's own wireless system. The trick is to set the RX and flash up, and after it has initialized, press the mode button for 3 seconds - Manual 1/1 will come up and can be set as required. The King will then fire it as a Manual amongst other flashes in ETTL.
SeedyBee2008 4 years ago
Max - the TX output hotshoe is for certain Pixel add-ons, and does not operate a tx-mounted flash.

HSS works on all capable flashes, on Canon Wireless and on King Radio. Only one sync method can be set at a time.
ajmole 4 years ago
No pass through on TX is disappointing. When I read reviews of beta version everything seemed to be working fine. This feature was one of the big reasons I bought it. I use my on camera flash as a fill in while I have other flash on the receiver. This setup works well for wedding receptions. Now, I need to work for another solutions. PW perhaps. Is there any work around to enable that feature?
SeedyBee2008 Posted 4 years ago. Edited by SeedyBee2008 (member) 4 years ago
ajmole - I share your disapointment. It's all programmed, and we cannot reasonably modify the firmware if Pixel has decided against providing the facility.

I have used a flash bracket with a King RX mounted on it, but when swinging to portrait mode, I have fears for the stress on the King case. This may be why a flash can no longer be mounted on the TX transmitter.
SeedyBee2008 4 years ago
I wanted a small battery pack for my Pixel King trigger/controllers, for the same reason I use flash battery packs. I do mainly on-location event photography. Backup gear for everything, carried in, no mains power.

The Kings provide a USB connector for an alternative power source. I wanted a flat, 4xAA inline pack, with good control. Ada Farm's "MintyBoost" kit provided the control board, and a cheap USB battery pack provided the case.

20110916-CDB-04006 by SeedyBee2008

The case had only a diode and no voltage control. This was removed and the MintyBoost modified to fit in the space. Unfortunately, the switch had to be removed as there was just no space left for it. A piece of insulating film in the battery compartment acts as a switch in the meantime.

The MintyBoost must not be driven by more than 5.00 volts - 4x NiMH (4.8 volts), 3x Alkaline (4.5 volts) or 3x NiZn (4.8 volts). I expect to use Alkaline for their long shelf life, suitable for a backup device. A wooden dowel was made to act as a filler for the 4th battery slot.

Tested in the hand, the King TX and RX had a 30-second delay before switching to power-in mode. I suspect that the King expects that a disconnected unit is waiting for connection from the firmware upgrade tool in a computer. However, in actual use, I connected the battery pack then dropped one internal battery from the King - the system kept working without interruption.

20110916-CDB-03008 by SeedyBee2008

There is one question which I have asked Pixel and not yet had a reply: "Can you safely have both connected?" There is a risk of the externals trying to charge internal alkalines - a no-no. I will be testing whether internal rechargeables are recharged by the externals. If so, there is no limitation to how much charge will be applied. The lack of response to the question suggests that there is no arbitration between internal and external power supplies, and therefore it would be wise to disconnect the internal batteries when using an external source. This removes the convenience and speed of just plugging in a a battery pack when the internal batteries get low during a session.

I need to carry backup batteries - having them in a plug-in pack is convenient.

My biggest challenge will be to stop grandchildren "borrowing" the packs for their iPhone, iPod, Droid, etc.
ajmole 4 years ago
SeedyBee2008 - thanks for a quick response. I agree with you that a bracket option is not a good one.
elv0000 4 years ago
I think a flash bracket is really the only solution for on camera flash with the Kings. A camera flip style bracket would be ideal though so your not moving the flash just the camera. And the flashes focus assist light would still line up then lense then too (as the King AF light is not much use).

Even on a Demb flip bracekt the RX would probably hold up fine as the flash is kept fairly upright www.dembflashproducts.com/bracket/ Atleast theres no cord now.

The Phottix Odin has the same issue, so its either PW TT1/5 or Radiopopper PX otherwise.
ajmole 4 years ago
The Demb bracket looks pretty interesting. I might consider it. Thanks
elv0000 4 years ago
The Ray Flash Rotator bracket would probably be ideal, flash always upright and flash AF light always over the lense -

SeedyBee2008 4 years ago
Thanks for the link, Elv.

One problem - comes with >built-in< ttl cord. I wonder if it can be removed.

That would help to explain the high price, too.
The no throughput of the Tx set me off to wait for the next generation... The bracket solution isnt really a good one, I think Im good for now with a TTL 10 meter cable and my cybersyncs.
elv0000 4 years ago
I just tried this with a makeshift bracket and found that it won't work with the King RX directly above the TX unless they are atleast about 4" apart.

Very close they just won't fire at all, at about 3" the flash fires at full dump, and by 4" it fires as it should.

So it wouldn't work with either the Demb or the Ray Flash bracket, you'd need something nice and tall, preferably a camera flip.

Or a reporter style bracket like the Canon with the flash down beside the camera seems to work fine too.

Otherwise maybe a little RF sheilding around the RX would allow it closer to the TX.

I also tried with the flash on camera as well as the King TX via a Phottix Duo ETTL cord but no luck there, flash works but the King TX will not fire any RX.
SeedyBee2008 4 years ago
Elv - I used a bracket (2 inch clearance) to take some group shots, and had no miss-fires. I have just re-checked, and cannot produce a miss, even when the RX is mounted on the TX shoe! I also tried moving the RX all around the camera - no misses.

If you get a full dump, I think that there is a contact problem. All your observed odd behaviours I experienced with a 430EXII - the subject of a post about the jammed lock ring. "TTL" being displayed is also an indicator, and a re-setting flash.

I spent some time plotting the "dead" angles of Cactus triggers at close range. This factor produced many miss-fires, but I found that there were positions that predictably worked reliably. At over 4 feet, there was enough scatter to remove the dead angles. 2.4GHz triggers seem much less prone to this problem.

Once I realised that the lock ring was faulty, and fixed it, all such symptoms disappeared.

By the way, I am not recommending that an RX+flash be directly mounted on the TX - the load on the case is substantial.
elv0000 4 years ago
Seedy - Thanks, at least they are not all going to have this issue then but I'm sure mine are not liking the close range, results are exactly the same each time at distances I mentioned. Beyond 4" above the have no unusual behaviour.

Atleast its something to keep in mind if they did happen to start acting up at some point when mounted on the bracket.
Kinematic Digit PRO Posted 4 years ago. Edited by Kinematic Digit (member) 4 years ago
Just got mine today, and all the early observations are matching what I'm seeing so far. Loving these so far, but funny enough in terms of controlling different groups intensity levels, I still kind of like my knights better in that respect, but if I don't plan to do that, then I do appreciate how easy it is to set up and go with the Kings.

Looking forward to more shoots with it and definitely liking the new build quality they put into this.

I'm glad I didn't re-write the second side of that manual fold out. In the future I hope to get the units before I re-write it into english. I did some tests of it's range while the unit was in my house and it failed around 200 feet. With line of sight, I it was no problem at that distance. I didn't test it at the maximum but I doubt I'll ever need a flash further than that.
kmggdc 4 years ago
I'm new to wireless triggers.
Bought Pixel Kings (2 trans and 4 rec.) I am experiencing a strange issue.

I mounted my flash to simulate an on camera flash position. With the Pixel King in use. White Bal. set to AWB. Took a shot. Then take the Pixel King out of the set up and take the same photo with flash on camera. The on camera flash set up has more vivid colors. The photo taken with the Pixel King has slightly less color.

Same is true with White Balance set to Flash. Also with WB set to Flash my image with be all blue tones and overexposed. I have repeated this multiple times. This only occurs when WB is on Flash.

More disturbing is the loss of color when Pixel King is in the system. I did not try other WB settings just AWB and Flash.

Anyone else experienced this or made this comparison?

I have sent photos to Pixel King seller and they have forwarded them to Pixel and am awaiting them to try to reproduce my finding. Any idea what could be causing this?

I have only tried 1 set and will test the other units next chance I get.

Set up was Canon 5DII w 580EXII 24-105 f4L
ISO 800 F4 1/10
SeedyBee2008 Posted 4 years ago. Edited by SeedyBee2008 (member) 4 years ago
The TX transmitter hotshoe should NOT have a flash mounted. It will mess up the communications with the camera.

It is for Pixel add-ons.

Latest version of my Pixel King Review (PDF)
Flashback reborn 4 years ago
They look nice. Do you think they will work in ETTL with Metz flashes? As I see everywhere just Canon EX or EXII...
elv0000 4 years ago
@ kmggdc - where you using high speed sync by any chance?

We only discovered this when we were first testing the Knights, but there is a white balance shift as a Canon flash goes into high speed sync.

Further testing though showed that the flash directly on camera does exactly the same white balance shift in HSS without any triggers involved.
kmggdc 4 years ago
Flash was mounted directly on the camera, not on the Pixel hotshoe.
When in the remote trigger mode, the flash was on a stand in nearly the exact position as if it were on the camera, to avoid and light variation with regard to placement.

No is was actually shot at 1/10th. No HSS mode.

Thanks for your comments.
Labowski72 4 years ago
Could post some links to shots showing what you are talking about.
Do you have any other triggers that you could use, or a ETTL cord.
I can't see how the Transmitter/reciever can effect colour or WB. I can see how malfunction could effect exposure.
kmggdc 4 years ago
I will do more testing over the weekend, and also try another tranmitter and receiver.

I thought it may have to do with preflash information? Don't really understand how these things work, but the results are real.

Here is a link to some photos from a quick set up. Can't post RAW to this site so they are just JPEG.


Look at the room images 1, 2nd (blue), and 3rd are all taken with Pixel king triggers. 1 on WB-Auto and 3 WB-Flash Compare to room images 4 and 5. 4 on WB-Auto and 5 WB-Flash. So compare 1 and 4 and 3 and 5. You will see warmer / deeper colors on both 4 and 5 when the flash is mounted directly on camera.

Again this was a quick test and will try other units this weekend and repost.
lens fanatics JMac Posted 4 years ago. Edited by lens fanatics JMac (member) 4 years ago
I only have my Pixel King for 3 days now and haven't done any extensive check yet, when i read your comments i tried to do the same test , Speedlite on light stand very close as it almost on top of camera hot shoe, King set on auto ETTL mode,: Use 3 different White Balance AWB , flash & tungsten.
From any opening of f2.8 - f22 , ISO 100-800 i can see an obvious bluish color at the shutter speed of 1/13 and slower , it get a little bit better and almost cleared at 1/15 but i would say 1/30 and higher is the safest i can go to get away from it. ,

With my flash connected on my cameras hot shoe set on ETTL mode i can get a decent exposure with all the settings i tried above.

For the 2nd quick test (off camera flash, with the same camera exposure settings above) i tried to do manual FEC through the King transmitter and played around at all increments of speedlite from full power 1 to 1/64 (430 EXII) and i can't get any correct or forgiving exposure.

Prior to King i always use Nikon SU-800 and Canon ST-E2 commander which are both IR signal and i never had any of this issue , i only have Cactus V4 as my 1st RF flash trigger but really didn't use it much because i always miss the HSS , so i can't attest to other RF trigger on how they behave on slow shutter speed. I hope if this is some kind of an issue with this trigger Pixel will have a way to fix it on their firmware update or i hope it is just our user error thing or lack of experience on RF trigger . ,

Even with this Bluish observation we had i am still going to keep it because i tend to use it only outside mostly on HSS or atleast 1/60 the slowest , at outdoor i am little lazy now of doing line of sight all the time with IR.
Eqipment use on this test : Canon 7D , Canon 70-200 ISII , 430 EXII , Pixel King TX & RX 1ea.
SeedyBee2008 4 years ago
WARNING: I have just discovered that both sets of my new Kings DO NOT do E-TTL and FEC with the 550EX (three of them). They do work correctly with the 580EX (I).

I re-tested with the test Kings we had six months ago, and the 550EX worked as reported in my review.

We'll see what Pixel has to say.
elv0000 Posted 4 years ago. Edited by elv0000 (member) 4 years ago
Regarding the WB shift -

I'm not seeing any WB change from 1/10th (or even 1/5th) to 1/250th.

But those shutter speeds all had more of a bluish tone than the flash on camera...

But when I placed the flash (on Kings) directly above the camera, as close to the on camera postion as possible, the images all look to have just the same tone (as the flash directly on camera).

1/10th is very slow though, are you guys sure there is no ambient light in the image effecting the colour?
kmggdc 4 years ago
Regarind your comment on WB shift

"elv0000 says:
Regarding the WB shift -

1/10th is very slow though, are you guys sure there is no ambient light in the image effecting the colour? "

It there was ambient light; wouldn't that effect both on camera and off camera exposures? That wouln't have anything to do with the color shift I'm seeing when using the Pixel King. Right?
kmggdc 4 years ago
WB shift update.
I did some more testing today and found consistant color shift (less color / less contrast) when using the King's. However during my testing I was comparing exposures between on camera flash to off camera using the King's. When doing the testing with the King's I would hold the flash with the receiver attached, directly above the transmitter, simulating the on camera flash position. When doing this I found the exposures to be very erratic. Some under exposed, some over exposed and more often the flash would not even fire.

So I then switched to my other transmitter and then everything started working alright. Exposures were consistant. And color shift was extrememly minor or not detectable. Looks like my 1 transmitter is defective.

The customer service where purchased have been very responsive to this problem. In fact they have sent all communications to Pixel and they responded with a firmware update (beta version). Have not installed it yet, but it is supposed to fix the blue exposure conditions that occur with WB set to Flash, and shutter speeds less than 1/30th.
elv0000 4 years ago
kmggdc - sorry I havn't seen the images there of what your doing, but yes ambient may be equal on and off camera.

The erratic behaviour holding the flash above the camera sounds like what I was describing above regarding mounting the flash on a bracket above the camera. I need atleast 4" distance above to get normal operation, where as SeedyBee could place the flash directly on the King Tx with no issues. So its going to depend on individual units but clearly some have issues being too close together.

Let us know know how the firmware goes.
elv0000 4 years ago
Another thing SeedyBee has just reminded me -

The threaded holes in our RX feet are not threaded deep enough to accept a regular 5mm long thumbscrew!

So if you go to tighten them on a bracket or anything with a thumbscrew they may not tighten down properly. Screwing a brass stud in the base you may not notice the problem as they don't always screw all the way in anyway.

I had to tap mine out from the beginning with a 1/4" 20 UNC tap.
kmggdc 4 years ago
Agreed, I noticed all my receivers threads are not deep. I threaded my light stand adaptor directly onto the bottom of my receiver and it felt unstable. So I'd caution on this mounting method, especially with a flash and diffusor mounted on top.

Maybe the company can send / or loan a 1/4"-20 UNC tap so we can retap ours.
SeedyBee2008 Posted 4 years ago. Edited by SeedyBee2008 (member) 4 years ago
kmggdc - First, my apology for miss-reading your first post above. Second, thanks for pursuing and reporting on this problem.

Like Elv, I was surprised at the 1/10th second shutter, but you are right, although ambient may affect the WB evaluation, it should do so equally in your tests.

Your flash reports the colour temperature back via the Kings to the camera for Auto and Flash, so duration which is affected by ambient in E-TTL mode could vary by time value and therefore in colour temp.

I have tried upgrading the firmware, and it seems to work safely. I waited until I had a second TX before trying!

One point on the RX screw socket - a bottoming tap is needed, not a taper and probably not a second-cut. Your distributor can probably get replacement feet from Pixel - they are easy to replace.

THE FIX - see
kmggdc 4 years ago
Did a lot of testing in my living room this weekend. Photographed the room with sunlight blasting through the front window (intentionally), to practice for 2 photo shoots this week. I photograph kitchens and sometime we are dealt lighting (depending on the time of the day).

It was nice to be able to make all my adjustments from the camera back AND have flashes out of the line of site with the camera. I never tried the PW's because of all the bad reviews. It's ashame a company of that size and magnitude didn't come up with a better way to deal with the issue.

For now the Pixel Kings are working and I'm pleased to officially be a wireless ETTL user. Although I am using mine in manual mode, but wanted the ETTL for simple lighting situations, mainly for events with hand held off camera flash shots.

I'll ask about getting replacements for the threads.
SeedyBee2008 4 years ago
I thought of interior lighting while testing the Kings, and expected that they could fit well. I would try the Mixed mode - E-TTL/FEC for mains, and forced Manual on-flash for fills - any number of ratios that way.

PWs have a dilemma. They are using 1980s technology, and need later radio carriers to handle the much greater data flows each way at speeds that match modern digital camera processor speeds. But they have a massive user base which wants backward compatibility.

One way to fix the Canon manufacturing weakness is to use a more appropriate frequency, and cut off all existing users. They would then be forced to re-gear, and cover the new development costs. :-)
kmggdc 4 years ago
"I thought of interior lighting while testing the Kings, and expected that they could fit well. I would try the Mixed mode - E-TTL/FEC for mains, and forced Manual on-flash for fills - any number of ratios that way."

Sorry to say I'm new to flash photography. I've used hot light and am just learning this lighting method. Can you explain in a more basic way, what you are saying in your comment? If this is not the right thread I understand. Don't know if you can PM on this forum or not.

I thought the King's didn't work in mixed mode?
E-TTL/FEC for mains?
forced Manual on-flash for fills?

I've been using manual camera settings, getting the exterior (window) properly exposed, then manually bringing my flash up to get the interior exposure correct. I'm sure I've got a lot to learn, but if I use ETTL seems like my exterior windows are over exposed.

Since this is King forum, can you direct me to the correct forum?
Sorry for my basic knowledge and thanks for any comments to clarify.
SeedyBee2008 Posted 4 years ago. Edited by SeedyBee2008 (member) 4 years ago
My Pixel King Review on page 8 describes this mode.

If you look at your camera's Flash Control Menus, you will realise that Canon allows you to select either E-TTL or Manual. So, only one can be selected on the camera. And this is how you control the Kings.

To see what we call Mixed Mode, put two Mark IIs on RXs in ETTL mode. Test. Then go to one flash and hold the Mode button down until it changes to M 1/1 (still powered up). Set a power level, and test. You will get ETTL on the untouched flash, and a synchronised manual level on the other. Change levels again. That's the system. 1/128, 1/64, 1/16 and ETTL all together. The Manuals should not provide light for the main subject as that is handled by ETTL..

If you set a "proper" ambient exposure, of course any added light will overexpose, no matter how little. I would look at using low manual settings for stairwells, alcoves, table lamps, etc.. Then ETTL/FEC for the main interior. Windows are often set by camera settings to below "proper" exposure.

Flickr has an Architectural Group. Search for Scott Hargis.
kmggdc 4 years ago
SeedyBee2008, that's interesting. How did you know that? Don't see that in the "manual".

I just haven't had any luck using ETTL for interior shots that involve windows and natural light. But I have so much to learn. That's why I'm taking lots of photos and just working my way up to a proper exposure via trial and error.

I'm fairly happy with the end results, but it just takes a while to get there.

I'll search for you recommendation. Thanks.
SeedyBee2008 4 years ago
I have added a "Problems and Erratic Behaviour" section to my review. It's too big for here, but you can find it here.

The Kings are a good buy, but make sure that the known problems will not prevent you from doing what you want.
SeedyBee2008 4 years ago
Pixel has released a firmware update for both the TX and RX.

It apparently fixes the white balance problem (above), and a firing problem when the TX settings do not match the RX settings.

There could be situations where flashes are powered up with different King RX settings so that the photog. can switch between units easily. The TX could have been confused by this.

Follow the links on the website: here
fkm_bkk 4 years ago
I have updated both my TX and RX with the latest firmware...

but I still notice the white balance problem (when using flash mode)..
Revolving doors 4 years ago
Just curious if anyone tried using a dual ttl cord to trigger two flashes off of one king RX? I Know that it can be done with pw flex's.
elv0000 4 years ago
I tried the Phottix duo cord but it didn't work, though I have some mixed results with that even splitting 2 ETTL flashes straight from the camera.

Which dual TTL cord did you mean otherwise? I only know of Michael Bass modded cords and the notoriously unreliable Dot Line style ones. With King receivers around $75 cords may not be worthwhile.

A few people have reported white balance issues now, I know Pixel are aware of it but its not happening to everyone, I'm not sure if there is any pattern to the gear used etc.
SeedyBee2008 4 years ago
I would be very surprised if any form of spliiter at the end of a King RX would work.

Remember that the TX Controller builds up a map of each flash and its settings mounted on an RX. What would it make of two flashes, same or different models, same or different settings, trying simultaneously to transmit back their details - total garbage!

And if I was programming the Kings, I would make sure that it did not work!
theflasher.eu 4 years ago
Hello Seedy & Elv,

I bought these triggers based on your reports on the pre production models. Unfortunately the production models don't work with my Canon 550ex flashes, of which I have 4.

I tried contacting Pixel and explained the situation they just replied

"Now ,we have not this 550ex flash ,so we can not answer this question"

Do you have any influence on the matter? The Kings were compatible before so why not now?

I'm sure there are loads of 550ex owners who would want to buy this product if it worked!
SeedyBee2008 Posted 4 years ago. Edited by SeedyBee2008 (member) 4 years ago
@ theflasher - There are several people in you position, including me with three 550EXs.

I had a courteous reply from Pixel, basically saying "go jump"! I will write again, and offer to send them one of mine at no charge.

I find it quite inexplicable.
mjkzz (a.k.a zwdeal) Posted 4 years ago. Edited by mjkzz (a.k.a zwdeal) (member) 4 years ago
Hello Elv,

Does it work with ANY manual flash, like YN560, in high speed sync mode? From your review, it seems that it would work with ANY manual flash as it was mentioned that it is sort of like Hypersync, a PocketWizard technology which works with ANY manual flash.

However, on eBay, one seller indicates that high speed sync feature only works with Canon HSS capable flashes, such as 580EX II, 430EX II, etc.

I almost bought a set today but backed out because I want to make sure it works with my manual YN560, which I have four of them.

Revolving doors 4 years ago
thx elv and speedy, it sounds like the dual cord is not a reliable method and taking into account the low cost of the king rx it's worth just getting another rx. I was looking into the phottix duo cord which you have tried.
elv0000 Posted 4 years ago. Edited by elv0000 (member) 4 years ago
zwdeal - Yes, the simple answer is the King hypersync works with the YN-560 at all shutter speeds as long as you set the flash to FULL power.

edit - I will have to take some time to write a clearer HSS/Hypersync explanation as this was already confusing people further.
theflasher.eu 4 years ago
@ Seedy: Re 550EX compatibility....

Have you tried using your production King Tx with your preproduction Rx with 500EX mounted ?

It would be interesting to see if the 550ex fires properly in that set up?
mjkzz (a.k.a zwdeal) 4 years ago
@Elv: Woow, thanks for in-depth reply, I am impressed.

Pixel King might only work with hotshoe flash at full power, it is possible for PocketWizard to work at lower power by tweaking timing but at reduced speed and suffer some banding. I don't have PW but I designed a circuit (or a hack if you will) that allows me to do high speed sync. This little thing allows me to observe a lot of things about high speed sync (needs ST-E2, however). Check out my thread:


And just for the fun of it, I did use a radio trigger along with my "hack" and sometimes do not see banding at all, sometimes, 1/8 of frame at bottom.
elv0000 4 years ago
zwdeal - oops!, I totally missed that thread, that is very impressive!

Your right, you certainly can get a full frame at some lower power levels and shutter speeds even with the King that has not timing adjustment. Its very hit and miss though to the point it wouldn't be practical to be trying to find a combination that works all the time.

Using the timing adjustment on the Ojecoco I wasn't really able to get many better frames at lower than full power. You may be intrested in their technique though as it uses no ETTL data, just a shutter release cord to pick up on the cameras shutter timing.

theflasher.eu - I emailed Pixel yesterday as well regarding the 550ex compatibility, hopefully we can get some positive response to that.
mjkzz (a.k.a zwdeal) 4 years ago
elv: that looks just like a Pixel King . . . from shutter release cord . . . hmmm, I can do that, too, but not very reliable, however, due to shutter lag.
fkm_bkk 4 years ago
the latest update does not solve my WB issue...

but not really a problem for me...i normally use AWB.
SeedyBee2008 Posted 4 years ago. Edited by SeedyBee2008 (member) 4 years ago
There have been other recent posts confirming your finding. One is from a pure Canon (no King) setup, reporting the same problem. So perhaps the Kings are doing their job, but the Canon bodies are not.

Is there a Canon firmware update for your camera that could installed?
tstendall 4 years ago
I’m thinking of getting some of these but would like a query answering.

I’d like to use multiple off camera flashes without a flash on camera but with ability to focus in very low light.

I’ve heard the AF assist light on the Kings is a bit rubbish so wondered if you could stick a canon ST-E2 on top of the on camera King transmitter to act purely as a focus assist light (not bothered about using it to control zones).

I know that this is possible with pocket wizards but they are about three times the price.

Can anyone with some Kings and a Canon ST-E2 see if the focus assist light on the st-e2 fires on top of the transmitter and let me know?


elv0000 4 years ago
Hi Tom, I don't have an ST-E2 here, but it will not activate the focus assist light or anything else on a flash placed on the Tx shoe, so I'd be pretty sure it will not work with the ST-E2 either unfortunately.

I don't know if the ST-E2 mounted on another receiver may actually emit the focus assist beam? That may be a long shot as the ST-E2 is only designed as a transmitter.

Otherwise the other option is to try and make use of the focus assist light on the slave flashes to light the subject. Would be pretty hit and miss though with run and gun (or in a softbox etc). Run and gun the only option is a flash on camera on a bracket and Rx (unless the ST-E2 will actually work in place of the flash on the Rx).
brianwiese Posted 4 years ago. Edited by brianwiese (member) 4 years ago
No Pass Thru Hotshoe on TX ... :(

This makes me *very sad*... I don't need ETTL on the hotshoe, just a voltage trip to fire my CyberSync Commander[1] for Alien Bee/White Lightning studio lights so that I can adjust their power levels as well as my Canon 430EXII speedlights remotely from the camera position. I'm confused why they even included the pinouts then on the TX hotshoe... hopefully it can be re-enabled with a firmware update?

Wow - I see PW now has this ability to mix studio strobes + speedlights in ETTL and manual power adjustments... AC9 Alienbees, PowerMC2 for Einstein640, PowerST4 for Elinchrom + FlexTT5 and miniTT1 (+ AC3 zone controller). PW naming conventions are so confusing!

[1] www.paulcbuff.com/cc.php
[2] www.pocketwizard.com/inspirations/tutorials/
elv0000 4 years ago
brianwiese - the full TTL hotshoe was completely enabled on the original beta models but I could see the Tx was just not going to hold up to the stress of a flash on camera. We were already having issues which seemed to be due to the Tx moving off the contacts.

It is a pity they have currently disabled the hotshoe completely, but there is mention of a possible future zone controller type device in the manual, so there may be some possibility they can re enable the contacts in future through the firmware.
photodelux Posted 4 years ago. Edited by photodelux (member) 4 years ago
elv0000 - I can understand the stress of another flash sitting on top (especially a 580EXII) but I'd love to have another trigger on top... I mean my gosh... how many different wireless flash trigger systems are there (proprietary and out of date)... I have 4 alone that I've gone through (blazzeo dmt-16, npt-04, yn-602/603, cybersync.. RP,PW,PK?) Just wish I could get them all to work together instead of the PocketWi$ard route. =) And then PW & RP are not internationally standard 2.4ghz (you need separate versions), so that's why the cheap triggers from China are great when shooting in US & Europe.

Hopefully the TX hotshoe pass through can be re-enabled in a firmware...

OT: Actually, the Cyber Commander (CC) doesn't transmit the flash power level with the shoot signal -- it adjusts power levels independently (at least on Einstein640) -- so I can just use the CC on it's own to tweak power levels remotely then use the Pixel King or any system to trigger the flash. Could also put the CC on a receiver to fire. =) I'd rather have the CC off my camera anyways!
Okie Bill Posted 4 years ago. Edited by Okie Bill (member) 4 years ago
Just received mine yesterday. 1 transmitter and 3 receivers. It was a toss up between the Kings and the Odin triggers. I went with the kings mostly because The fact they work through Canon's flash menu. Only had a short time last night to play a bit and sort them out to where I felt comfortable with them.

Had a large portrait session using them today and was very impressed. Not one misfire during the whole session and everything works very smoothly. The only glitches I found were from me not understanding the system and forgetting to turn something on. The setting of the flashes in manual mode right from the camera menu it real plus. There was no difference between using them and the wireless function of my 7D except this system worked much better and didn't have to worry about the flashes seeing the camera.

I would like to see pixel add a firmware update to be able to add ratios to the ettl side of the system. But for what they cost and how well they worked for me with just a few hours of learning I am very happy with them.
elv0000 4 years ago
Okie Bill - Yes they are great value for the price. If they could have made TTL ratios work with the current system though I think they would have already done it. I get the feeling they will need to move to a commander / zone controller type device as well if they are going to control some more functions like ratios or mixed ETTL and manual.
theflasher.eu Posted 4 years ago. Edited by theflasher.eu (member) 4 years ago

Any further news re: restoring 550EX compatibility on the production units?
svenbluege Posted 4 years ago. Edited by svenbluege (member) 4 years ago
I'm currently trying to trigger a flash attached to an Pixel Opas Receiver using a Pixel King transmitter. The camera I'm using is a EOS 5D MKII. So here is my issue:

B_01_20111126-IMG_4062 by svenbluege

Camera Setting:
Trigger on 1. curtain or high speed sync: not matter which exposure time I set, I always get most of the image dark (see example picture)
Trigger on 2. curtain: I get an correctly exposed picture if I use exposure time longer or equal 1/20s. If I go to 1/30 or shorter the image is the same as before.

The King transmitter just got the latest firmware update.

The curious thing here is: it works if I attach the transmitter to a EOS 7D.

Is there anybody with the same issue? Is there a known fix?
SeedyBee2008 Posted 4 years ago. Edited by SeedyBee2008 (member) 4 years ago
Sorry - I was thinking of Pixel Knight, not King!.
NVJims 4 years ago
OK, how do you update the firmware. I went to their site and downloaded the King_RX_V1010.rar file. Do I just copy it to the unit?
elv0000 4 years ago
They have the firmare instructions here -

boris68 PRO 4 years ago
I am looking to update my old Yongnuo RF602 and I am looking at these as an option
My 602 have worked fine for two years but after abuse two have broken, and one transmitter of my 2 is giving sings that is not doing well
I only ha one 430EXII , but these seem like a great all around option
Can I use them with my YN560 without any issue?
My second question if I may, can I hook one transmitter to my Light meter PC cable and fire the flashes?
Thank you for the help in advance
theflasher.eu 4 years ago
550EX update!!!!! with firmware v1010

I finally managed to get to a PC and update the firmware on my Kings.

I can now partially get the kings to work with the 550EX via the following procedure:

1) mount flash on King
2) turn on king first
3) turn on flash.

The 500EX will now respond to FEC and FEL from the camera BUT only for a couple of minutes !!!!! If you do not activate the flash for a minute or two the communication between king Rx and Flash breaks down and the flash will only fire at full power. Turning the flash off and on again restores communication and full control. This is inconvenient. Hopefully the next firmware update will resolve this problem.

On a sony forum there is discussion about the Sony compatible Pixel Kings. A recent Sony issued firmware update has rendered the Kings incompatible with a particular camera, Pixel replied that due to impending new product releases they will not be issuing new firmware until next March :-( I hope this is not true
fkm_bkk 4 years ago

What bracket would you guys suggest ? Would like to have one 580exii on top of my camera all time..

a. Lightweight
b. Horizontal & vertical
Angel Fernández Posted 4 years ago. Edited by Angel Fernández (member) 4 years ago
Hello I wanted to discuss my problem, I have a canon 40D and
have received two units Pixel King receiver and a transmitter unit Pixel king.
I wonder if someone happens the same:
ABC transmitter-L1
(Receiver 1) Channel A in L1 whit flash metz 58 AF-1
(Receptor 2) in B-channel L1 whit canon 430 EX II flash

driving parameters from the menu on camera
ETTL mode in group A+B+C or
Manual mode in group A:B.......
the (receiver 1) does not shoot below 1 / 250.

In the camera menu sometimes the option is available 2 nd curtain and sometimes not available.

ETTl the ratio in group A:B, A + B + C I can not set it.

I upgraded to the latest version of firmware Pixel King in RX and TX 10 10.

I am preparing a video demonstration with these failures.
Really find it quite unstable system.
I would appreciate comment on whether the problem is mine or failure configuration of receiver and transmitter.

sorry for my English!
svenbluege 4 years ago
The 500EX will now respond to FEC and FEL from the camera BUT only for a couple of minutes !!!!! If you do not activate the flash for a minute or two the communication between king Rx and Flash breaks down and the flash will only fire at full power. Turning the flash off and on again restores communication and full control. This is inconvenient. Hopefully the next firmware update will resolve this problem.

I've got the same issue here. After switching all devices on everything works as expected. But after a couple of minutes the flash does not longer receive updates from the camera and flashes at full power. Unfortunately I can't reproduce this. Sometimes this happens sometimes not.
Labowski72 4 years ago
Hi I have the same problem. It would seem not all transmitters/recievers suffer this, only some. I have found that this occurs if the transmitter/reciever has entered "sleep" mode (no activity for some time - not sure how long, the reciever flashes orange).
If you try to FEL (*) the transmitter/reciever stop communicating. You have to "wake" the transmitter/reciever up by half-press shutter (or back-button AF), then you can FEL.
Try this and see if it reproduces your problem.
Has any body got any experience with these triggers and Nissin DI866 MKII ?
Jay Clark Photography 4 years ago
Is there anyway to velcro the TX to a flash and sync them with a cord and put that flash on the hot shoe and have them fire ETTL on camera?

Really dissapointed these things wont work with on camera flash!
colorcrazyface [deleted] 4 years ago
So I'm guessing this will be Canon only, as per Knights
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