Michelle said almost all that's really important. I'd just like to add, that you shouldn't compare that Nikon D100 with the Canon 300D. She costs almost double, so this ain't fair. Compare her to the 10D if you wish or wait on the smaller Nikon which is said to be on market early next year. The A1 is a great cam, even having this anti-shake built-in (IS in some canon lenses is not really cheap - but well worth it!), but i'd never trade her for a SLR again. Just my two ct. :)