Will the 420 EX work on TTL with my 40D or do I need to go to the 420 EX II ?
I want to work up a macro rig using 2 TTL flashes. (I know Canon makes one, but at 700 bucks) I had a similar rig years ago with my Contax RTS and 2
TLA 20 flashes that worked great. To bad Canon doesn't make a small flash that will TTL with the latest digital cameras.

