I bought this for a digital camera (the Sony Cybershot DSC-T9 if you must know) at the last minute before the trip. 4GB gives me 1345 pictures at 6MP, so you know the size is huge. I rather stupidly took a 2GB and a 1GB memorystick duo with me thinking I'd be clicking like a fool for the week, and they sat forlornely in their case unused. 1300 plus photos for a week - that's 200 pics a day, that's 85 pics an hour, that's 1 and a quarter a minute, that's.... my finger grew stiff and tired after 40, and on a cruise, I spent much more time eating and drinking and sleeping so I only used a third of the 4GB. Still, it is a great buy, huge capacity, fast and very typically quality SanDisk. Buy it.