Sigma 14mm f/1.8 DG HSM Art Lens for Nikon F w/Sigma USB Dock & Advanced Photo and Travel Bundle

This is a great kit combination, mainly because it includes the USB doc, and the cleaning kit. The lens is suberb! I use super wide angle lenses mainly for astrophotography and I was worried about coma which is a serious problem with most lenses. I tested this lens on a cloudy night but managed to get enough sky in the corners to test it. There was very little coma in the corners! I am using a crop sensor body so I would expect it to perform much better in the corners than a full frame body so I can't comment on that but I'll most likely be using a crop sensor body from now on so I am happy with the results. I compared the clarity and sharpness of the stars with this lens to the Tamron 15-30mm f/2.8 and the stars appear to be much sharper than the Tamron which I loved. I happened to catch the Andromeda Galaxy in one frame and it was surprising clear and bright compared to the Tamron! Focus is fast even in low light and image quality is amazing. The corners have some vignetting but that is easily fixed post processing. I am still waiting for a clear night to test this lens on my sky tracker for long exposures but from what I've seen so far, I think I'm going to be very pleased. I may go back to a full frame body in the future and hope that the results I'm getting will be as good or better than my current crop sensor body.