Sony's Memory Stick

Sony manufactures several outstanding digital cameras. And they also manufacture their own memory device: the digital camera Memory Stick.

The latest versions of Sony's Memory Stick are Memory Stick Pro and Memory Stick Pro Duo. The Duo is the smaller of the two, being slightly thinner and 40 percent shorter. Like other media, Memory Sticks come in various capacities – in this case, up to 2 GB.

A drawback to Sony's Memory Stick is that other manufacturers' cameras won't accept them. Changing camera lines would also mean replacing your memory cards.

Another potential disadvantage is that, while CF and SD cards are now commonly available in drugstores and souvenir shops, memory Sticks aren't. If you should be away from home and need a new or replacement card, it may take some work to find one.