Nikon and Canon would be your best choices in DSLR, but don't rule out Pentax, Sony or Olympus. You don't need a pro level camera body, but a pro level lense is a must if you want to get the best colors and sharpness. This could cost you some bucks, but a 50mm from Nikon or Canon is only around $100 and one of the finest lenses every made. With any camera, sharpness can be greatly increased with the use of a tripod.