http://speedliting.com/forum/ Canon Speedlites and Macro-lites, ST-E2 transmitter, and Canon flash accessories. en Fri, 10 Sep 2010 14:48:48 GMT vBulletin 60 http://speedliting.com/forum/images/misc/rss.png http://speedliting.com/forum/ http://speedliting.com/forum/showthread.php/304-Possible-problem-when-430EX-is-slaved-to-580EX-II?goto=newpost Wed, 08 Sep 2010 16:11:40 GMT I have an older 430EX (not the 'II" version) which I'm slaving to my new 580EX II. Thanks to Syl's advice I'm experimenting with controlling all my flash settings from the rear screen on my EOS 550D (rebel T2i) instead of fiddling around with the less clear controls on the 580Ex II. Most of the time everything seems to work ok. Both flashes fire and I can usually get results that are at least adequate - and sometimes very good!

However, when I have the 580 in group A and 430 in group B, shooting with everything in manual, then try to change the power the 430 from the A and B controls on the camera's rear screen, I'm not convinced I'm really seeing the change in output I'm expecting from the 430.

Is this because the older 430 can't do that? Or is there something I'm doing wrong?

Just need to know if I need to fork out for another flash so it's properly compatible with this otherwise excellent system of controlling from the camera. ]]> Canon Speedlites BillCMartin http://speedliting.com/forum/showthread.php/304-Possible-problem-when-430EX-is-slaved-to-580EX-II