Speeding Cards
Q. Since the price of memory cards can go up dramatically with speed ratings—e.g., 16X, 32X, 64X—it seems you should buy only the fastest that your camera can use. How do you determine this, for, say, my Canon EOS 40D?
A. Your 40D will be able to use any CF card you buy, but you won’t get any performance benefit from a faster card when you’re shooting. Top memory card speeds are always faster than most camera bodies can write. Instead, you get the benefit of that card’s speed when downloading your images to your computer when you use a separate card reader. Keep in mind, though, that faster cards are also often better made, use better grades of memory in them, and come with codes to download recovery software in case you encounter any problems. We suggest that you try something equivalent to SanDisk’s Ultra or Extreme cards or Lexar’s Platinum or Professional cards.
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