Sigma 28mm F1.4 DG HSM A is an Auto Focus (AF) Wideangle Prime lens with 35mm FF max sensor coverage and it is designed to be used with Nikon F (FX) mount lenses.
Lens Mount
Sigma 28mm F1.4 DG HSM A is compatible with cameras that have Nikon F (FX) lens mount.
Sensor Coverage
Max sensor coverage of Sigma 28mm F1.4 DG HSM A is 35mm FF.
Focal Range
Sigma 28mm F1.4 DG HSM A has a fixed focal lenght of 28mm. When mounted on a 35mm FF format camera, it provides an 35mm (FF) equivalent of 28mm.
Aperture
Sigma 28mm F1.4 DG HSM A has a max aperture of F1.4 and a minimum aperture of F16.