I am new to photography, and this is my first post, so please be gentle :)
I plan to buy my first DSLR soon, and I've chosen to go the FX road, probably a d700, or D800 (I'm gonna wait till january).
I have a question about cropping an image in order to get more zoom. How much (% of original size) would I have to crop, so that I could triple the focal length of a lense? (100mm to 300mm).
I don't want to print my photos, only view them on computer monitors, so I think a 4MP photo would be more than enough as a final cropped size. The reason I want to crop is because I cant spend so much money on telephoto lenses and because I'll probably not use them that much (I like ultra wide angle lenses for landscape). So I was thinking of getting the Tokina 16-28 for wide, and the Nikon 105mm for macro and occasionally for tele.
Would the 12MP D700 be enough to crop that much, or would I have to wait for the not-yet-announced D800?
(I hope this post makes some sense, english is not my native language)
Thank you, John.