I own a Canon AE-1 and a Sony Cybershot DSC-P93, and am looking to upgrade to either the Canon 350D or the comparable Nikon. My question is how these things focus. I know they have auto-focus, and a manual setting too. When you want to manually focus, is it just like focusing an old SLR, or is it like a digital compact with settings hidden in the menu? What do you see when you look through the viewfinder? Basically I want to know how easy manual focus is, because I hate the idea of the camera doing that for me! With shutter speed and aperture settings do you get options for fully automatic, shutter speed priority, aperture priority and fully manual? Finally, the lenses from the old SLRs don't fit the DSLRs, right? Or do they fit but kill the features?