What is the difference between these nikon lenses?
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?
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.
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.