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Canon EOS Digital Rebel XSi/450D by Christopher Grey

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Cards, Readers, and Batteries

MEMORY CARDS

The Digic III processor in the Rebel XSi/450 supports both Secure Digital (SD) and Secure Digital High Capacity (SDHC) memory card formats. Memory cards are priced based on their data transfer speed (DTS). Cards with a Class 2 rating are guaranteed to sustain a DTS of 2 megabytes/second, whereas Class 4 and Class 6 cards sustain rates of 4 and 6 megabytes/ second, respectively.

The DTS numbers for the Digic III are not available from Canon. Suffice it to say that it’s very fast. I made a simple and totally unscientific test to determine how inexpensive SD cards compare to their faster, more expensive ...

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