Hmm. Based on http://www.learn.usa.canon.com/resources/articles/2011/eos_qt_small_raw_images_article.shtml, it looks like the other RAW modes are simply not using all the pixels of the sensor. I cannot think of any reason you'd want to do this; if you bought a camera at a specific resolution, you'd want to use all the pixels you paid for. If you want a smaller file for a given session that isn't as important, don't shoot RAW, and shoot in jpg mode instead. Andrew . On Sun, October 21, 2012 7:46 am, Lea Murphy wrote: > A friend and I were talking this morning about shooting fullRAW vs. > medium or small RAW on his Canon 7D. > > I always shoot full RAW but am curious what would be the benefits vs. > drawbacks of that instead of one of the lower settings. > > I do realize it will save space but is quality or sharpness compromised? > > > I'd appreciate your experiences and feedback. > > > Thanks, > > > Lea > > > your kids . my camera . we'll click www.leamurphy.com > > > > > >