Summary: A solid lens option for the Nikon D5100. Very good for outdoor pictures and even in well lit indoor areas. No auto focus, but I don't mind doing it myself since I'm not trying to take fast action photos. Can't beat the price for what you get.
Summary: The only downside is that it doesn't have auto focus and there are no guides to help focus like there used to be in the old 35mm SLR lenses so you have to just "see" if the scene is in focus. Of course, if it did have autofocus, it would be much more expensive. Upside is the price.
Decent lens, but there's 2 versions it looks like.
4 December 2013
Summary: The lens offered appears to have changed alittle. When I bought it back on 3/13 there was no autofocus motor in the lens and was listed as model number A15. Now a new picture appears clearly showing an autofocus motor and the model listed as (A15N).