Sigma 40mm F1.4 DG HSM A is an Auto Focus (AF) Standard Prime lens with 35mm FF max sensor coverage and it is designed to be used with Nikon F (FX) mount lenses.
Sigma 40mm F1.4 DG HSM A is compatible with cameras that have Nikon F (FX) lens mount.
Max sensor coverage of Sigma 40mm F1.4 DG HSM A is 35mm FF.
Sigma 40mm F1.4 DG HSM A has a fixed focal lenght of 40mm. When mounted on a 35mm FF format camera, it provides an 35mm (FF) equivalent of 40mm.
Sigma 40mm F1.4 DG HSM A has a max aperture of F1.4 and a minimum aperture of F16.