What is so special about UDMA cards?
- Thread starter virdi
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Clicky here a quick review
Conclusion
Of the three DSLRs we tested standared high speed and UDMA cards with, the fastest shooter - the Canon EOS-40D - worked better with the slower card. This demonstrates that high speed performance is not always enhanced by the use of UDMA cards - if your camera doesn't state UDMA card support, it's almost certainly better to stick with 133x high speed cards, both to save money and to maintain optimal performance. The only exception is if you use large cards and don't want to wait for long periods when emptying them. Even so, you will need to invest in a UDMA card reader and, most likely, a Firewire expansion port. But if you shoot RAW and your camera does support UDMA, you probably will benefit from using UDMA cards.
Conclusion
Of the three DSLRs we tested standared high speed and UDMA cards with, the fastest shooter - the Canon EOS-40D - worked better with the slower card. This demonstrates that high speed performance is not always enhanced by the use of UDMA cards - if your camera doesn't state UDMA card support, it's almost certainly better to stick with 133x high speed cards, both to save money and to maintain optimal performance. The only exception is if you use large cards and don't want to wait for long periods when emptying them. Even so, you will need to invest in a UDMA card reader and, most likely, a Firewire expansion port. But if you shoot RAW and your camera does support UDMA, you probably will benefit from using UDMA cards.