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Yeah you need a decent zoom lens. My camera is an old Olympus DSLR with a 200mm zoom lens plus an extension ring on it to make it zoom a bit further. I'm sure the more modern olympus/zukio lenses would be way better by now.

That's what I thought. Mine is a Nikon and max I can go is 105 =/

Is your Nikon a dslr that can fit different lenses? Odds are the body is better than my olympus, you just need a decent off brand zoom lens.