If you have a huge stack of old negatives or slides, your best bet is to send them off to India. Seriously: there are services which will scan all your negs, let you choose which ones you actually want to keep via a web browser and then get the digital files returned to you. Apparently it’s pretty cheap.
Or you could do it yourself, with the iPICS2GO Negative to iPhone Scanner. It’s a black box which uses your iPhone 4/S’s camera to snap photos of your own old film and then feeds them into software to produce the photos
The iPICS2GO runs on 4 AA batteries which power the built-in LED, and the case holds the iPhone and makes sure the lens is in the right spot. The software does the dirty work of turning negative into positive and removing the orange cast of print film.
It seems practical enough, and at just €51.39 ($62.20) it’s cheap enough for occasional use. You won’t want to use this to grind through roll after roll of film, but for quickly turning your old wedding photos into digital files, ready to be defaced in Photoshop and mailed to your bitter, divorce-happy spouse, it’s ideal. Available now.