Focal Length:16 mmComparable 35mm Focal Length: 24 mmAperture:Maximum: f/2Minimum: f/22Camera Mount Type:Sony Alpha Minolta AFFormat Compatibility:APS-CAngle of View:83.1deg.Minimum Focus Distance:7.87'' (20 cm)Groups/Elements:11/13Image Stabilization:NoAutofocus:NoTripod Collar:NoDiaphragm Blades:8Filter Thread:Front: 77mmLength:88.9 mm (3.5'')Weight:575g (20.3oz)・Wide angle focal length equivalent to 24mm in the 35mm format・Fast f/2.0 maximum aperture for effective low light shooting and shallow depth of field・Aspherical and Extra-low Dispersion lens elements reduce aberrations・UMC lens coating allows even light transmission and minimizes ghosting and flareThe Samyang 16mm f/2.0 ED AS UMC CS Lens for Sony Alpha Camera is a manual focus wide-angle lens compatible with APS-C format DSLR digital cameras. It provides an 83.1deg. angle of view which translates into a 35mm format equivalency of 24mm. Its fast maximum aperture of f/2.0 is effective in low light shooting and provides shallow depth of field. With two aspherical lens elements and one extra-low dispersion element chromatic aberrations are minimized and sharp color-accurate images are the result. UMC lens coating facilitates even light transmission and reduces ghosting and flare.