Vivitar Ultra Wide-Angle 7mm f/3.5 (similar to 8mm) HD Aspherical Fisheye Lens for for Pentax K-S1, K-S2, K-m, K-r, K-x, K-01, K-3, K-5, K-5 II, K-5 IIs, K7, K10D, K20D, K-30, K-50, K100D, K110D, K-500, K200D, K1000, K2000, *istDS2, *istDS, *istDL2, *istDL, *istD, (K-Mount) DIGITAL SLR CAMERA Ultra wide-angle 7mm fisheye lens with exaggerated perspective and approximately 180 angle of view, for dramatic effects Ultra-wide 180 diagonal field-of-view for APS-C size image formats--will produce a rounded image that doesn't cover the entire frame when used with compatible full frame digital cameras Manual focus lens with no electronic connections to the camera for automatic focus nor metering. Lens is constructed with hybrid aspherical lenses for outstanding, sharply defined images Lens features super multi-layer coating to reduce flare and ghost images Lens has a minimum focusing distance of 12