For sale I have another Nikon 28mm F/2.8 AI-S. I purchased this along with some other gear and I shoot primarily Canon. Lens is in very nice condition with the exception of 1 very small mark on the rear element. I am sure this will have no effect on images but I believe in full disclosure. Body is in great condition, Aperture blades are clean and dry, and focus is smooth. I believe the lens has been very lightly used it feels new to me. I have used this lens on a D200 and 5DMkII and it produces excellent images. Price is discounted for the tiny mark on the rear element and is $250 shipped and Paypal to the continental US.