SMC Pentax Fish-Eye 17mm f4

Description

The Pentax Fish-Eye 17mm f4 is a tiny fisheye lens with full 180-degree corner-to-corner coverage on 35mm film (or full-frame digital). It extends only about 3.5cm from the lensmount and has a built-in rotating turret of filters with orange, yellow, UV, and skylight options. Clean glass, smooth focusing, clean diaphragm, and only very minor cosmetic wear.