I bought a D700 a while back and am loving it since (naturally). Recently I've started using wide angle lenses more often, like my 35mm (a DX lens, so image quality isn't up to par entirely). I'm now looking to add a wide-angle zoom lens to my collection, but can't choose between the 16-35 and the 24-70. I don't think I'll be needing the very wide angle of the 16-35 that much, 24mm seems to be sufficient to me. I'll be using it for environmental portraits / documentary work mostly. The advantage of the 24-70 is of course that it extends to 70mm, making it perfect as a single lens to use for reportage/documentary work. However the sheer size, weight and price of the lens scares me. Same goes to a somewhat lesser extent for the 16-35 of course. What's your thought of these 2 lenses compared?