wendellt wrote:------------------------------
I'm not sure what you mean by a 1:1 lens.
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I mean a 50mm lens what you see in is what you get
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I guess you mean that you want a "normal" focal length lens?
AFAIK, the 50mm was considered "normal" on 35mm film. I've read that on Nikon's dslrs with a 1.5x crop factor, that 25 to 35mm is considered "normal" for field of view.
The fastest lenses, under f/2, in that focal length are rather expensive. The 35mm f/1.4 is manual focus and about $600USD. The 35mm f/2.0d is about $260USD. The others are at f/2.8 or higher, which wouldn't be a big deal. You could get the Sigma 18-50 f/2.8 EX or the Nikkor 35-70 f/2.8d for decent prices and both are excellent lenses, IMO.
what pro lenses are analagous to the 24-120 VR - if this is a consumer grade lens? I need a lens that will last in snow and desert conditions
Pro lenses are usually very expensive, which is about all I can tell you. The 35-70 f/2.8d is a pro class lens. Whether or not it or many other lenses would last in snow and desert conditions, I dunno... Like any mechanical device, they're subject to failure.
also my main lens should be fast enough to capture the moment without me having to play with the manual settings too much, i just want instant results
Well, I have a number of fast lenses and some of them are pro class, but all of them are capable of taking bad photos, if I don't do my part.
Every lens has a learning curve associated with it. They'll do what you tell them to do and give you instant results, but they may not be the results that you want.