Sometimes you either can't afford to buy or carry enough memory. Professional event photographers with digital SLRs can shoot many gigs of photos in one day. And what about traveling? Should you have to carry a laptop computer just to store your photos?
Portable digital storage devices are standalone hard drives that allow digital photographers to download and reuse their memory cards in the field. Capacities generally begin at 20 gigabytes and most are powered by rechargeable batteries. Many have LCDs for still image viewing and video playback. Images are transferred to your computer via USB or FireWire connection. If you travel a lot or find yourself running out of memory regularly, you may want to consider adding a portable storage device to your camera bag.
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