I'm a newbie to flash. Therefore need some help here. I have a 5D and 60D, 580ex and 430 ex. I've tested triggering 580 ex and 430 ex with 60D builtin wireless trigger, or trigger the 430 ex with on-camera 580ex, as I understand this is optical trigger. However I noticed that the range or the placement is limited for the optical slave.
I wonder if I get a radio trigger, and in the meantime using either 430 or 580 on 5D for AF assist in the case of dark environment where AF doesn't work, how shall I set it up? I guess that I need to connect the radio trigger to 5D via PC port, since the hot shoe will be taken by the external flash ? Does radio triggers normally support PC port connection? Is there a way I can disable external flash firing flash, but only IR for AF assist? I don't see it in 5D menu.
How about for 60D? I know it doesn't have PC port, so that means I can't use external flash and radio trigger at the same time on hot shoe?
Sorry for so many questions.
thanks a lot!