I used to have a canon 30d which i just broke and bought a used in excellent condition canon 5d classic from KEH for $500. For macro you can buy very good digital lenses from sigma. I think I read recently that you can buy an adapter to use nikon lenses on a canon, but likely with only manual use. If you are doing general landscape, native and flower pics, you really don't need auto focus and often with the little point and shoots the autofocus is maddeningly difficult to get to focus on what you want! If you learn a few basics about where the best image qualities are for closeup or macro and other things, you won't need any auto settings like 'macro' or 'closeup'; general rules of thumb remembered will be all you will need