What is the difference between these nikon lenses?
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Http://www.amazon.com/Nikon-50mm-Nikkor-Digital-Cameras/dp/B00005LEN4/
http://www.amazon.com/...004Y1AYAC/
http://www.amazon.com/...001GCVA0U/
why are they each priced differently if they have the same f-stop and zoom? What makes them different from each other?
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The 50mm g lens has the Af motor in it for cameras in the d3000 and d5000 line. The d lens won't focus on the entry level dslrs.
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If you look closely the first two have different autofocusing systems, the second one being much better. The first one is AF where as the second one is AF-S.AF means that there's no auto-focusing motor in the lens, so your camera must have an auto focus motor.AF-S means it has an auto-focus motor built in, hence the higher pricing. If you have a camera with a built in auto focus motor then i recommend buying the first one.
As for the one, it is an f/1.4, where as the others are f/1.8.