I sent canon a couple of email regarding this and this is what they said. Thought some of you might like to know.
I have purchased the EOS Digital Rebel and I am going to get my compactflash card. My question is, how fast does the camera write to the card. There are several speeds of cards. I don't want to spend the extra money on the fastest card if the camera only writes at maybe 12x. Thanks in advance for your help.
Thank you for contacting Canon Technical Support.
The only feature on our cameras that will utilize the high speed rated Compact Flash (CF) cards is the Continuous Shooting feature. Unless this one feature is of extreme importance to you, you will honestly be wasting your money on a high speed rated CF card. The CF cards that come packaged with our cameras do not have a speed rating. I recommend that you purchase a CF card with the memory capacity in mind, not the speed rating.
So I sent them another email:
Thanks for getting back to me on this. At times I will use the Continuous Shooting feature. So I would still like to know about how fast the EOS Digital Rebel will write to the card. Thanks in advance
Unfortunately Canon does not speed rate digital cameras. The write speed of the camera is limited by the drive inside the camera. Using a faster card rated at 12x or 24x speed may not perform any faster than a slower rated card. If you use a card reader capable of reading at the faster speeds, then you may experience faster downloads from the card reader. I apologize for this inconvenience.


