Originally Posted by M_Six
Yep, that would be close enough. But don't risk your 20D if you think it might mess things up. I've found 4GB Type II cards for $10, so that's easy enough to suck up if I just need one for testing.
you talking about compact flashes? if you're wanting to buy one for the 30D just to test it, aren't you planning on getting the 7D anyway which takes the same card? so, it just means you're making an early investment for the 7D by getting a good card. Rather then wasting 10$ on a bad card.
or am I just not really paying attention to what's going on?