Just as digital cameras have developed enormously in the last ten years, so too have the storage devices on which images are temporarily stored—namely memory cards.
The two major card formats are CompactFlash (CF) and Secure Digital (SD), with Sony’s proprietary Memory Stick a minor third for a selection of its own (primarily point-and-shoot) cameras.
Cost is a consideration, as the high-capacity cards can be expensive, and the cost per megabyte is much more than it is for desktop or laptop computer memory. In other words, memory cards are for shooting, NOT long-term storage. Calculate your memory card needs by estimating your typical rate of shooting and the file format. With a large megapixel sensor, there is a major difference between ...