Summary: I thought this card would be faster, maybe I had unreal expectations... Will not keep up with my D300 shooting 8fps for even 16 frames. I do shoot RAW though... Like I said, probably expected too much.
Summary: I use this card with my Canon 40D for wildlife (mostly birds) and equestrian event photography. Occasionally I need to shoot a burst to catch the action. In the past, I was limited while the card caught up. This has not been a problem with this card. I rate it 4 instead of 5 only because of the cost differential between it and lesser cards... Wish they were a little cheaper..