Will the Sandisk 4GB Extreme III (20MB/sec) Compact Flash be good with the Canon Rebel XTI?
Sandisk’s Extreme III CF card is high speed…and perfect to use in the XTi (400D). It’s the card most often used in camera tests and reviews…and it’s the only brand I ever use. The second link below has done a number of speed tests with various cards and the Extreme III (other than the newer, Extreme IV) often comes out on top. Actually, you will find that 4GB Extreme III is slightly slower at write speeds than the 2GB version…but you will never notice the difference. Each 1GB allows approx.100 RAW images (at 9.8MB each) or 260 Jpegs (Fine, at 3.8MB each).