Summary: I tested this lens on the Nikon D800. The lens is super sharp, but was designed with a huge amount of field curvature. This means that for landscapes/cityscapes and other far-away subjects, you have to stop down to past f/8.0 to get sharp edges on the D800. This is a lens designed for being used wide open at close range - important to know if you plan to use the lens for another use. I think it's pricey for what you get at current Amazon prices.