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CompactFlash (CF) was originally a type of data storage device, used in portable electronic devices. As a storage device, it typically uses flash memory in a standardized enclosure, and was first specified and produced by SanDisk Corporation in 1994. These cards contain both memory chips and a controller. Most digital cameras that utilize CompactFlash cards can use any storage size CF card up to around .5 - 1GB with no major issues. CF cards with a storage of 2GB or more, however, use the FAT-32 file system, and some cameras may not be able to read this kind of memory. There are two types of Compact Flash cards - Type I (3.3mm thick) and Type II (5mm thick) CF cards. Digital cameras with Type I slots can't use Type II cards. However, devices with Type II slots can use both. Compact Flash cards have good transfer speeds (up to 20 Mbyte/s write and 20 Mbyte/s read for the SanDisk Extreme III) and available in capacities from about 8 megabytes to about 12 gigabytes.OpticsPlanet, Inc offers a full line of original Compact Flash Memory Cards with full manufacturer's warranty and Free Shipping on orders over $29.95!

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