Tim .. what camera are you using?

Neil vN

thanks for the outstanding website. I just cannot seem to get my mixed brand flashes firing together. I am triggering two 580 II’s and an SB900 with an ST-E2, however, even without TTL and the SB900 in Manual slave, they won’t fire together. The SB900 fires but the 580′s won’t. Any suggestions/help would be most appreciated.

Tim

Parv, I did replace the image with another version of the same image which is more heavily watermarked.
The original would’ve been too easy to edit.
It’s a necessity.

Neil vN

Or, perhaps I did not pay attention to the legs, only the torso & the background?.

Brian … their description is just a obfuscation of the simple fact that:

A = Automatic (and will be controlled by the duration of the main flash), and

M = Manual, and as such the slave flash will only be triggered. Not controlled.

In other words, A is automatic and M is manual flash.

Neil vN

Can you tell me what the difference between SU-4(Auto) mode is and SU-4(Manual) mode is. I am embarrassed to admit that even after reading the SB900 manual I still don’t understand it.

Here is what it states:

In A mode the remote flash units start and stop firing in sync with the master flash unit.

In M mode the remote flash units only start firing in sync with the master flash unit.

I guess I am unsure as to what the stop/start is..

Thanks,

Brian

Rafiyub … that is the general way it is done when flash is the main source of light.

The converse is where the flash only acts as fill flash.

(I moved the rest of your comment to the actual article on the TT1 and TT5, where it would be more relevant.)

Neil vN