Hello Tim, Mary-Lou, et al,
Tim,
I expect you are pretty well out of luck with the 300 EZ. I've been down that road before with the 10D, and I assume the same thing holds true for the 20D.
On EOS-D’s, EZ flashes will work in manual mode but not in TTL mode, i.e. they’ll only work with no automation whatsoever, because of the white balance pre-flash (which cannot be turned off except, precisely, in manual mode). Even EX models will not work in TTL, only in E-TTL and manual modes.
Not only that, but most older non-Canon lenses will not auto-focus on EOS-D cameras, and will even make the camera jam. (Turn camera off and on – try again – give up, dump great older lens – get new lens, make sure it’s EF…).
GREAT! says the Canon marketing department. They'll HAVE to buy brand-new flashes, and lenses, and other stuff...
I hate the Canon Co. ( -- get great FD stuff -- have to dump everything when switching to EOS because of failing eyesight -- get great new EOS stuff -- have to dump 3 lenses and 4 (Canon) flashes when getting 10D -- get new EX flashes, new lenses… ).
Don’ t ask…( Maybe I should title the above rant “ Canon products, and the photographers who love them too muchâ€)…
Mary-Lou,
Your Rebel will no doubt be faster with a faster card.
The question is whether the extra speed is worth the extra investment.
Your best bet is to check Rob Galbraith’s CF database at
www.robgalbraith.com (look at the menu on the right side of the page).
Have to go now.
Paul (PA2000)