There is a lot to be said about getting a camera with the biggest sensor, and subsequently highest pixel count, that you can find. It gives you a hell of a lot of flexibility with the final image you want.
By cropping the image, you can effect a pretty decent optical zoom effect, and still keep the fidelity of the image intact. Just don't go more than 1:1 while cropping as a digital zoom effect does tend to soften and artifact the image quite a bit.
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