Are you shooting your digital images in RAW format? If you use iPhoto to organize them, there is something you should know.
I was under the impression that whenever you edited a RAW file in iPhoto, iPhoto created a jpg copy of the image. As it turns out, that’s not really the case. iPhoto actually makes a jpg copy of EVERY RAW file imported into iPhoto. It doesn’t matter if you edit it or not. Two copies (RAW and jpg) get stored in your library folder.
If you shoot a lot of RAW, this could start adding up quickly. It’s something to consider if you have limited drive space.