This autofocus fisheye lens is designed for use with digital SLR cameras equipped with APS-C size image sensors. The Nikon version produces a diagonal angle of view of 180° (154° for Sigma, 167° for Canon). The diagonal field of view of this fisheye lens produces striking images with exaggerated perspective & distortion. The minimum focusing distance of 13.5cm/5.3inch, & maximum magnification 1:3.3 allows subjects to be as close as 1.8cm/0.7inch from the lens' front element. This close focusing capability allows close-up photography & also it is possible to make use of large depth of field that covers wide range of subjects.