The Canon EF 8-15mm f/4L Fisheye USM is a super sharp and crazy wide “L” series fisheye lens designed for both full frame sensor cameras, such as the Canon 5D Mark III, On a full frame camera you will get a fully circular image at 8mm but a more traditional full frame image at 15mm. If you are shooting with a crop body, the lens barrel has markings for APS-C/APS-H sensors showing which focal length to use in order to avoid vignetting. This lens is built like a tank and is dust and moisture resistant. It also features ultra low dispersion elements, a Sub-wavelength coating to reduce ghosting, and a fluorine coating (also found in Canon's super-tele) to prevent fingerprints and smudging on the exposed elements. This lens is ideal for fine art photography, street photography, urban settings, wide expanses, and parties.
