Messages

1

Third Party Manufacturers / Re: 6D and Yongnuo: Anyone used YN-568EX and/or YN 622c triggers on a 6D yet?

« on: January 25, 2013, 09:14:04 PM »

Update on 622c with 6D: I found that one transceiver gives me different exposures than the other when on Camera. Also when the flash goes to sleep the one transceiver can wake it up. The other transceiver does not does not.

It is likely that there is no problem with the 622s.

When you place a transceiver on a camera, the transceiver's settings are applied to the camera's flash control menus. If one has an FEC of zero and the other has FEC -1, the camera will behave differently, according to the unit mounted. There are other settings that do that. It can be worth using one as a dedicated transmitter to avoid this hidden change.

You may have found "The Other YN-622C User Guide" helpful.
https://docs.google.com/open?id=0B77OmmGIg0gMVFpqNkpBYXBHajA

PS I have tested the 6D with the 622s, and they performed flawlessly in all features except one. I couldn't find the DOF button to test the modelling light before the 6D was wrenched from my grasp.

2

Speedlites, Printers, Accessories / Re: Canon pre flash in manual mode with wireless triggers?

« on: December 31, 2012, 03:50:48 AM »

One that does not have this problem is the YN-622C. There will be a pre-flash from flashes in E-TTL mode. E-TTL flashes in Manual mode will not emit a preflash.

More details in
https://docs.google.com/open?id=0B77OmmGIg0gMVFpqNkpBYXBHajA

3

Lighting / Re: Yongnuo flash sync

« on: December 30, 2012, 12:14:01 AM »

I don't know if 602s or 603s work with 622s - does anyone else know?
...
Edit: Has anyone ever wondered how E-TTL II gets the ratio right, regardless of the relative power of the flashguns? It's voodoo!

A 602TX can be mounted on a 622, to drive 602RXs. There is quite a hit on the sync speed, however.

Under E-TTL II, the camera takes 5 exposure readings (Firing Group A:B C). Ambient; Group A; Group B; Group C; Ambient.) If a flash in any group does not handle E-TTL, then it will not fire and will not be included in the evaluations. It measures reflected light, regardless of power, distance, bouncing, modifiers, etc.

4

Speedlites, Printers, Accessories / Re: Flash transceiver

« on: December 22, 2012, 09:14:23 PM »

You may find the info in my "The Other YN-622C User Guide" of interest:
https://docs.google.com/open?id=0B77OmmGIg0gMVFpqNkpBYXBHajA