ETTL vs ETTL II flash

Started Apr 9, 2007 | Discussions thread
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c.hammett
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ETTL vs ETTL II flash
Apr 9, 2007

Can someone explain ETTL vs ETTL II ? (Not the technical, but the practical application of it. ) I bought a 430EX flash Saturday, and was reading in the 20D manual (p. 97) where it says that the camera can execute ETTL II autoflash with any EX series speedlite. I can't find anything in the 430EX manual about this. Does it mean that the camera improves flash control, or is that only for the larger 580 EX flash ?

BTW... I tried a search for this and came up empty...I also did a google search and came up with Chuck Westfall's explanation, (link below) but it didn't help me understand if my 20D is executing ETTL II with the 430 EX. I am just not quite understanding if I am getting "improved control" or what (if any) difference it makes.

http://photography-on-the.net/forum/showthread.php?t=46311

Thanks...

carolyn
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