Which one should i buy? Ime sure most of you are going to say buy the lens..But the D800 with 36 megapixels croping now comes in to play big time..is it not true that my 70-200 2.8 now becomes a 200-600 2.8 by cropping the photo ? ..will the resolution be about the same as a D7000 ?? plus all the extra detail when cropping may not be needed?? How do the pixels on subject with this camera compare to other camera lens combinations.?


