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 Sigma SA mount cameras.
Lens Mount
Sigma 40mm F1.4 DG HSM A is compatible with cameras that have
Sigma SA lens mount. Some of the latest released cameras with Sigma SA lens mount are
Sigma Quattro,
Sigma Quattro H and
Sigma SD1 Merrill.
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.
Maximum Magnification Ratio
Sigma 40mm F1.4 DG HSM A has a Max Magnification Ratio of
0.15x and has a minimum focusing distance of
0.4m.
Aperture
Sigma 40mm F1.4 DG HSM A has a max aperture of F1.4 and a minimum aperture of F16.
Optical Formula
Sigma 40mm F1.4 DG HSM A's optical formula consists of 16 elements in 12 groups. Following special elements are used in this design: