Darkside- 4:47pm, 6 November 2012
Recently I purchased a Nikon D7000 and an SB700 and I've been playing around with them a lot, taking pictures of friends and dogs and whatever happens to be in front of me at the time. I also will just point the camera at random things in my house and mess around with different exposure techniques (bouncing off a wall, putting the flash in a corner, whatever).

Yesterday I took a picture where I happened to be facing a window and noticed that my pop up flash that I was using as a commander was showing up as a light source in the reflection. It wasn't visibly bright, but it was definitely emitting light during the exposure. I tried setting my SB700 to commander mode and doing the same thing and it also was visible. My understanding of the CLS system is that the commander shouldn't contribute *anything* at all to the final exposure, so why would this be occuring?

I don't think I've messed up any settings in my camera, has anyone else experienced something like this before?
MrDAT Posted 6 years ago. Edited by MrDAT (member) 6 years ago
Do you have the built in set to '--'? There are a few threads about this. I've read something that says it may still show, but it's very low power and raising the shutter speed might reduce it even more.

Have you tried setting up commander mode with '--' as built in power and then have NO other flashes to see if it actually contributes?
Darkside- Posted 6 years ago. Edited by Darkside- (member) 6 years ago
Yes, I've done both of those things with both the SB700 as a commander and popup as a commander and they are both visible in the frame. I've tried setting my shutter to the max sync of 1/250 and much lower and it produces the same result.

edit: I just tried setting the shutter speed higher than the sync (1/320) and both flashes (when used as a commander) are no longer visible in the frame. I'm assuming this is because the shutter curtain is cutting them off though, not because they have stopped firing.
It's just Mark PRO 6 years ago
If you set your commander to (--). the commander will contribute little to the exposure. Sometimes you can still see the reflection if you're shooting something reflective. Since you're shooting indoors, aim your commander in a direction that keeps the reflection out of your frame.
MrDAT 6 years ago
But did it contribute to the scene?
camcleat Posted 6 years ago. Edited by camcleat (member) 6 years ago
If it continues to be a problem, you may want to consider this:


I ended up getting one since I am using some strobes with optical slaves, and the pre-flashes set them off too early. Now, the setup works like a champ.

It also helps hide the built-in from showing up on highly reflective surfaces (though still may not completely eliminate it).
SybErkRimInAL 6 years ago
it's definitely normal. Joe McNally said so. Plus, I can see it in my kids eye in this pic. I too had it set to "--"

Keep away from the gifts!
Darkside- 6 years ago
Well if Joe said so, I guess I'll just learn to live with it.

Thanks all for the input and helping verify that I'm not *completely* crazy.
mausgabe PRO 6 years ago
+1 Nikon SG-3IR ($12).
It's just Mark PRO 6 years ago
Put your hand in front of it.
Craig's Collection PRO 6 years ago
Yes, the SG-3IR is the ticket to prevent the built-in flash from showing in the exposure through reflective surfaces. I use mine all the time... well worth the minimal cost.
Rangefindergeneral 6 years ago
IMHO a small flick of on axis rocks..!!! But I rarely shoot mirrors..!!!
Bobsnikon 6 years ago
Sounds like this one is solved, but the light from the commander flash will always be visible especially in a highly reflective surface like a window, but won't contribute anything meaningful to the overall exposure.
alohadave 6 years ago
www.keithhorkinsphotography.com [deleted] 6 years ago
The on camera flash has to emit a millisecond of light to fire the remote speedlight, it is quite normal.
There a few things you can do I use a Gary Fong pop-up flash defuser this seems to work for me.You can use basically anything as to put in front of pop-up flash as long as the remote flash can still pick up a signal.
Hope this helps.
stellarviewer PRO 6 years ago
It won't contribute anything meaningful to the scene UNLESS.....

....You are shooting a macro subject that is somewhat close to the camera and therefore close to the built-in flash too. In that case it might contribute more illumination than you can tolerate.

The SG-31R discussed above will solve the problem.
Mr. Speedlight Posted 6 years ago. Edited by Mr. Speedlight (member) 6 years ago
One more recommending for the SG-3IR. I misplace things so l bought a couple.

The SG-3IR was designed for close-up but works great for normal photography too. It does cut the range some and may not allow around the corner triggering in doors.

Alfredk PRO 6 years ago
I don't think anyone said it yet, but SG-31R filter will do it.
Alfredk PRO 6 years ago
And for the people who have not read anything above my last comment...

The SG-31R works marvelous!
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