DPNow have tested the latest UDMA high-speed compact flash memory cards to find out if you really need to use them with your DSLR camera.
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“Both the Sony Alpha A700 and Olympus E-3 we tested are UDMA-compatible, but it was the Canon EOS-40D that impressed the most, despite not being UDMA compatible. Instead, the Canon relies on a more efficient onboard JPEG compression and buffer management system. The 40D does eventually choke during a lengthy continuous JPEG shooting burst, and the shooting rate drops dramatically, but it’s capable of many more more high speed shots before this happens. Only when shooting for long stretches in RAW mode, over 15-16 continuous shots, do the UDMA DSLRs show better performance.”

Website: DPNow - Ultra high-speed Compact Flash - do you need it?

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