Not technically a DSLR, but I'm currently using a Kodak Z650 which is 6Mpix, has a phenomenal optical zoom, adequate viewfinder, a good selection of modes, and so far a very very good capability for ground to air and from the air photography.
If you are looking at entry level in any case, I'd at least give it a good look - my Canon EOS hasn't been out of it's cupboard since I bought this. (Incidentally, it's one of a family, there are higher res and higher optical zoom capability relatives for a bit more than the £140 or so that's the going rate for the Z650).
G