Petzval Lomography X Zenit 85mm f/2.2 was designed for Nikon F and Canon EF mount cameras. The lens works with both analogue and digital cameras with either mount. The lens technology minimizes field curvature to allow focusing of the entire image. With this lens, you will get an area that is very sharp at the focus of the photograph over a narrow field. There is then progressive vignetting towards the non-focused areas to assist in directing the viewers attention to the crisp and focused area of the photograph.