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 Canon EF mount cameras.
Sigma 40mm F1.4 DG HSM A is compatible with cameras that have Canon EF
lens mount. Some of the latest released cameras with Canon EF lens mount are Canon 1D X III
, Canon 6D MII
and Canon 5D MIV
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 it is mounted on an APS-C sensor camera with 1.6x crop, it provides an 35mm (FF) equivalent of 64mm.
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
Sigma 40mm F1.4 DG HSM A has a max aperture of F1.4 and a minimum aperture of F16.
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: