Sigma 40mm F1.4 DG HSM A is a Fixed aperture 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 that are compatible with the Sigma SA lenses are Sigma Quattro, Sigma Quattro H and Sigma SD1 Merrill.
Sigma 40mm F1.4 DG HSM A is also available in Canon EF , Nikon F (FX), Sony E and Leica L mounts.
Size, Weight and Filter Thread
Size and weight is a very important decision factor when searching for your next lens. Sigma 40mm F1.4 DG HSM A has a maximum diameter of 88mm and total length of 131mm.
Sigma 40mm F1.4 DG HSM A has a filter thread of 82mm.
Focal Range
Sigma 40mm F1.4 DG HSM A has a fixed focal lenght of 40mm.
Weather Sealings
Sigma 40mm F1.4 DG HSM A is a weather sealed lens which provides an extra protection to prevent water and dust get inside the lens and camera body under light rain, snow and wind. In order to have an effective protection, you have to pair the Sigma 40mm F1.4 DG HSM A with a weather sealed camera body such as Sigma Quattro, Sigma Quattro H and Sigma SD1 Merrill.
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. 0.15x means that the max magnification ratio is very low and not suitable even for modest close-up shots.
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:
Lens Hood
Sigma 40mm F1.4 DG HSM A comes with a removable lens hood which is handy to reduce lens flare and glare in your photos.
Popular Comparisons of Sigma 40mm F1.4 DG HSM A
Here is the eight most popular comparisons of Sigma 40mm F1.4 DG HSM A amongst Camera Decision readers.