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Flash triggers: A dissection | by 司徒 Sensei™
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Flash triggers: A dissection

On the top: My first ever flash trigger. A generic knock off of a PT-04.


On the bottom: My new set of Youngnuo CTR 301-P


My theory, they came out of the same factory.


I bought two sets of CTR- 301ps to trigger my new Bowens Gemini 400 Set. What pushed me to get these over a set of Cactus v4?


1. I can purchase two SETS of Ctr-301p for the price of one set of Cactus v FOUR (not even five).


2. The CTR-301p can be triggered via trigger or set off via optical slave. Added bonus: comes with a sync cable! Super awesome for triggering things with sync ports :)


3. Easily available, unlike Cactus, you can buy them from anywhere and everywhere in HK/China, unlike Cactus which are only available via their one HK and one AUS reseller. Good for if you think you're going to get more flash/studio lights down the track.


The first set I opened, the trigger worked for the first 5 or so flashes, then died. Darn it. Brought out my screwdriver set and decided to have a look inside, fairly simple, 2 screws and you're in.


You can't see it in this picture, but it looked like the battery had leaked or something. I took it out and cleaned the contacts..are you serious 23a 12v? Who uses these batteries.. then a thought occured, hey! I have a set of pT-04, I bet the trigger uses the same battery.


I opened it up, and wouldnt you know it WAS the same battery (brand and everything!), nearly 12 months on, and its still kicking!


End of story, everything all good! Woot.


Ps. Pro tip, instead of jimming in a screwdriver to try and open the pt-04, there is a hidden screw under the QC sticker.


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Taken on July 18, 2012