Size and Weight Comparison
Size of a lens is an important deciding factor when comparing two lenses.Sigma 50mm F1.4 EX DG HSM is the longer of the two lenses at 68mm. The Sigma 50mm F2.8 EX DG Macro with a length of 67mm is 1mm shorter. Besides being longer, the Sigma 50mm F1.4 EX DG HSM also has a larger diameter of 85mm compared to Sigma 50mm F2.8 EX DG Macro's 71mm diameter.
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 F2.8 EX DG Macro weighs 320g, which means it is 185g (57%) lighter than the Sigma 50mm F1.4 EX DG HSM which has a weight of 505g.
Lens Mounts
Both Sigma 50mm F2.8 EX DG Macro and Sigma 50mm F1.4 EX DG HSM has the same Sony Alpha lens mount. Some of the latest released cameras that are compatible with the Sony Alpha lenses are Sony A99 II, Sony A68 and Sony A77 II.
Sigma 50mm F2.8 EX DG Macro is also available in Canon EF , Pentax KAF, Sigma SA and Nikon F (FX) mounts.
Sigma 50mm F1.4 EX DG HSM is also available in Canon EF , Pentax KAF3, Sigma SA, Nikon F (FX) and Four Thirds mounts.
Focal Range