The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Sigma 50mm F1.4 EX DG HSM and the Sigma 50mm F1.4 DG HSM A for their suitability to various photography scenarios:
Size and Weight Comparison
The size of a lens is an important deciding factor when comparing two lenses. Sigma 50mm F1.4 DG HSM A is the longer of the two lenses at 100mm. The Sigma 50mm F1.4 EX DG HSM with a length of 68mm, is 32mm shorter. On the other hand, there is no difference between the max diameters of these lenses, both coming at 85mm.
The weight of a lens is as important as its external dimensions, especially if you are planning to hand hold your camera and lens combination for longer periods. Sigma 50mm F1.4 EX DG HSM weighs 505g, which means it is 310g (38%) lighter than the Sigma 50mm F1.4 DG HSM A which has a weight of 815g.
Below you can find the dimension and weight table of the Standard Prime Lenses in Sigma SA Mount for size comparison purposes.
Standard Prime Lenses in Sigma SA Mount for Size Comparison
Lens Mounts
Both the Sigma 50mm F1.4 EX DG HSM and the Sigma 50mm F1.4 DG HSM A has the same 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 50mm F1.4 EX DG HSM is also available in Canon EF , Pentax KAF3, Sony Alpha, Nikon F (FX) and Four Thirds mounts.
Sigma 50mm F1.4 DG HSM A is also available in Canon EF , Sony Alpha, Nikon F (FX) and Leica L mounts.
Focal Range
Both lenses have the same focal range of 50mm and the fastest aperture of F1.4.