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 Leica L mount cameras.
Lens Mount
Sigma 40mm F1.4 DG HSM A is compatible with cameras that have Leica L lens mount.Some of the latest released cameras with Leica L lens mount are
Leica SL2-S,
Panasonic S5 and
Leica SL2.
Sensor Coverage
Max sensor coverage of Sigma 40mm F1.4 DG HSM A is 35mm FF.
Focal Range
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.
Aperture
Sigma 40mm F1.4 DG HSM A has a max aperture of F1.4 and a minimum aperture of F16.