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FORUMS General Gear Talk Flash and Studio Lighting 
Thread started 06 Jun 2013 (Thursday) 11:40
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YongNuo 622c & Multiple Cameras

 
ShotByTom
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Jun 06, 2013 11:40 |  #1

When my partner and I shoot wedding receptions we put 2 flashes on stands with 622's, and have a flash on camera as well. We tried this setup this past weekend but couldn't get it to work with 2 cameras.

We tried setting his camera to fire ch 1 and mine to fire ch 2, and set the two ocf to CH1 & CH2. We couldn't get this to work with both cameras. Does anyone know if this set up will work?


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v35skyline
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Jun 06, 2013 12:49 |  #2

If I understand the way the YN-622c works, then C1 and C2 are both lit, that indicates the tranceiver is on the 4th channel. It does not mean it can be fired by a YN-622c on C1 and another on C2.

From how I understand...

C1 lit = Channel 1 (same for C2 and C3, respectively)
C1 + C2 lit = Channel 4
C1 + C3 = Channel 5
C2 + C3 = Channel 6
C1 + C2 + C3 = Channel 7

Someone correct me if I'm wrong.

I'm not sure how the YN-622c works. I wonder if it can detect what mode to be in (transmitter or receiver). If the YN-622c can detect it is on a camera and be set to a transmitter only mode, that would be cool. So all transceivers would be on the same channel and when you fire your shutter/flashes, your partner's on-camera flash isn't triggered because the YN-622c it's on is acting only as a transmitter.

I only have one camera (and it's not even in front of me), so I can't really test this out...would be curious to know the outcome, though.


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tagnal
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Jun 06, 2013 16:58 |  #3

From CliveyBoy's TOYUG:

Two-Shooter Setup (John UK technique)
A second shooter can share augmenting flashes. There is a problem – preventing the zooming and firing of the other camera’s on-top flash.
· Camera 1 set to E-TTL or Manual, and Firing Group A:B at some ratio/power.
· On-camera 622 set to Remote mode and Group C, with an on-top flash.
· Camera 2 set up the same.
· Enhancing flash stand with remote 622 set to Group B, plus flash.
· When either camera takes a shot, it's on-top flash is treated as Group A, the augmenting flash as Group B, and the other camera as Group C. Group C is not enabled in Firing Group A:B, so does not fire.

http://photography-on-the.net …hp?p=14791737&p​ostcount=1


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CliveyBoy
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Jun 08, 2013 01:12 |  #4

v35skyline wrote in post #16005955 (external link)
If I understand the way the YN-622c works, then C1 and C2 are both lit, that indicates the tranceiver is on the 4th channel. It does not mean it can be fired by a YN-622c on C1 and another on C2.
C1 lit = Channel 1 (same for C2 and C3, respectively)
C1 + C2 lit = Channel 4
C1 + C3 = Channel 5
C2 + C3 = Channel 6
C1 + C2 + C3 = Channel 7

Correct.

I wonder if it can detect what mode to be in (transmitter or receiver).

The YN-622C is always in Receiver mode, except when on a camera AND on camera startup, flash control menus open, quick panel open, or 1/2-shutter. So, at other times it is a receiver and the on-top flash acts as a remote using the group setting on its 622.

John UK's solution is the right configuration for two photog's using shared augmenting lighting.


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ShotByTom
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Jun 08, 2013 09:02 |  #5

Thanks so much for the responses, I was pretty sure it was possible, just not sure how to do it so I'll give this a try.


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nicksan
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Jun 08, 2013 23:45 as a reply to  @ ShotByTom's post |  #6

I purchased these last week and tested them out at a wedding. Wished I read this before hand! I had a second shooter with me and we were having some mysterious flash exposure issues. Turns out we were triggering each other's on-camera flashes. Hahaha. Anyways, we temporarily solved it by changing channels on the off-camera lighting and using one of each.

I finally got to test the "workaround" at home and while at first it was a little difficult to understand how things exactly worked, I managed to get it working.

Example scenario:
2 x 5D3+YN-622+600EX
1 x YN-622 + 600EX on a light stand.

  • YN-622 that is mounted on the 5D3 uses Group C.
  • Via the 5D3's flash menu, set it to fire for A:B.
  • YN-622 that is on the light stand is set to Group B.
So I am guessing that the YN-622 that is on the 5D3 is receiving on C and transmitting on A & B. Since nothing is "listening" for Group C, nothing is fired. Same with Group A, at least radio-wise. According to the document, the speedlight that is mounted on top of the YN-622 that is mounted on the 5D3 will be Group A. (?)


Something like that? :lol:

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CliveyBoy
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Jun 09, 2013 00:04 |  #7

To repeat post #3:

When either camera takes a shot, it's on-top flash is treated as Group A, the augmenting flash as Group B, and the other camera as Group C. Group C is not enabled in Firing Group A:B, so does not fire.

Each on-top flash is handled as group A by its own camera; its flash head is considered to be the light-emitting component of the "Master Flash". The 622C is the Master.

When the transmitting flash is idle, it is a receiver. Each on-top flash then reacts to a fire instruction from another camera. If the 622 on the other camera is set to group \C, and the current camera is set to firing group A:B, then a group C flash will not fire.

This is all standard Canon, plus the effect of momentary change of the 622C to transmitter state.

Read TOYUG p.10 - see link in my signature.


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nicksan
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Jun 09, 2013 09:31 as a reply to  @ CliveyBoy's post |  #8

OK, so I have things working where 2 shooters can use the remote OCF and not trigger eachother's on-camera flashes.

Is it accurate to say that in this scenario, there can really only be one OCF group since A is on-camera flash and C is off-limits (so that on-camera flash doesn't get triggered)?

Another question is say shooter #1 adjusts the power on the OCF from the camera. Let's say he dials in -2 FEC. When shooter #2 shoots, will this still take effect or would whatever shooter #2 has set the camera to, for example +1 EC take effect?

**Figured this out myself. It works as expected. Camera #1 & #2 retain whatever flash power values they have.


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deltroid
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Mar 20, 2017 09:39 as a reply to  @ nicksan's post |  #9

I'm having the same issues, but I'm not getting the same results by following the "John UK technique". And here's why...

I'll use nicksan's example scenario:

2 x 5D3+YN-622+600EX
1 x YN-622 + 600EX on a light stand.

Both YN-622's mounted on a 5D3 are set to Group C...BUT....when you set the 5D3s' in camera flash menu to fire for groups A:B only, the YN-622 automatically changes itself to group B. And if I change the group on the YN-622 back to group C, the in-camera flash menu automatically changes itself to fire for groups A:B C.

This totally ruins the solution for me, because I cannot keep the YN-622's on camera set to group C.

Also, I prefer to use all YN-622's in MIX CONTROL MODE, which allows me to independently change settings to each flash without influencing the others.

For example:

1 x 5D3+YN-622+600EX set to E-TTL
1 x 5D3+YN-622+600EX set to MANUAL (1/64)
1 x YN-622 + 600EX on a light stand set to MANUAL (1/32).

Can anyone shed some light...?


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deltroid
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Post edited over 1 year ago by deltroid.
     
Mar 20, 2017 10:04 |  #10

Ok, so I did some more testing, and it turns out it does work...I just had to get a deeper understanding of the YN-622's.

I repeated all the steps in my previous post, to set everything up.

This is what I learned: Even though selecting to fire only groups A:B in the in-camera menu changes the group on the YN-622 from C to B automatically, once you half-press the shutter button on one of the cameras (which are now in group B according to the YN-622 mounted on it), the YN-622 on the other camera automatically goes to group C and does NOT fire. Yay! :-D

That's very clever, but very complex.

Wouldn't it be easier just to allow the receiving YN-622 (with the flash on lightstand, for example) to be in two channels or two groups at once?

Anyhow, I love this forum, and this is one of the main reasons why...it's an amazing source of knowledge.

Thanks!


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YongNuo 622c & Multiple Cameras
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