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CompactFlash is one of the most common types of digital camera
memory. Most high-end digital cameras, and all digital SLRs are
CompactFlash compatible.
There are two physical sizes of CompactFlash - Type I and Type II.
Type II is thicker and some cameras will only accept Type I CompactFlash.
Type II CompactFlash is usually higher capacity. The most common
Type II CompactFlash cards are mechanical, MicroDrive, memory cards.
The main benefit of CompactFlash, besides availability, is that
it has a controller chip in the card. The controller chip allows
higher transfer rates. Most cameras can't take advantage of this
extra speed, though. Only cameras with larger internal buffers -
mostly digital SLRs - can take advantage of high-speed CompactFlash.
CompactFlash is inexpensive, easy to find, and works in a lot of
digital cameras. For those reasons, it's one of the most desirable
types of digital camera memory.
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