I'd like some guidance please concerning the YN-622C, the YN-622C-TX and possibly the YN-600EX-RT. Here's my current camera and lighting equipment and then I'll share my questions.
I have a Canon 5D Mark III [Class I camera], 2 @ Canon 580EX (Version 1) & a Canon 550EX [Both Class II Flashes], a Quantum Q-Flash and Norman Studio pack and heads. I've been using the Radio Popper Px system for ETTL (and I don't like them) and the Quantum FreeXwire transmitter and receivers for Manual triggering. I do understand that I'd need to use an individual YN-622c on each OFF-CAMERA flash. I'm trying to determine beforehand my best options for use of my existing lighting equipment. For non-Studio work, it's nice to have the flexibility of using either ETTL or Manual and my current Radio Poppers and Quantum triggers will only do one or the other, so it's time to investigate YongNuo.
After reviewing the TOYUG, I understand that my Canon Class II flashes will NOT give me the full use of the features on the YN-622c or the YN-622c-TX. Although I prefer to use off-camera flash on a light stand or monopod, there are times that it's helpful to ALSO use the flash ON CAMERA for a bit of fill in addition to OCF. Since the YN-622c in the camera's hot shoe allows mounting of a flash on top of the transceiver, this appears to be easier and less clumsy than mounting the flash directly to the hot shoe and then somehow physically mounting a YN-622c-TX to the camera and using a PC sync cord into the camera's PC input port. Outside of the "clumsy" issue, is there any technical reason to prefer the YN-622c-TX over the YN-622c? Has anyone wrestled with this issue?
Alternately if I purchased a YN-600EX-RT to use ON CAMERA (without use of a YN-622c in the camera's hot shoe), would I then be able to ETTL and MANUAL control my Canon Class II flashes (580EX and 550EX) by affixing a YN-622c to the hot shoe of the off-camera Canon flashes AND take advantage of all the wireless capabilities to include ratios, zoom, groups, etc.?
And if I didn't purchase a YN-600EX-RT and planned on using full Manual for the ON CAMERA FILL and the OFF CAMERA flashes, must I use the YN 622c's on each flash and adjust the slave speedlite power settings by walking to each speedlite and physically increasing or decreasing the power vs. adjusting this done at the camera?
I'd appreciate very much input from anyone who understands the issues I've raised. Thanks.
Marc