Size and Weight Comparison
Size of a lens is an important deciding factor when comparing two lenses.Sigma 35mm F1.2 DG DN Art is the longer of the two lenses at 136mm. The Sigma 35mm F1.4 DG HSM with a length of 94mm is 42mm shorter. Besides being longer, the Sigma 35mm F1.2 DG DN Art also has a larger diameter of 88mm compared to Sigma 35mm F1.4 DG HSM's 77mm 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 35mm F1.4 DG HSM weighs 665g, 38% (425g) lighter than the Sigma 35mm F1.2 DG DN Art's weight of 1090g.
Both Sigma 35mm F1.2 DG DN Art has the Leica SL lens mount whereas the Sigma 35mm F1.4 DG HSM has the Leica L lens mount. Some of the latest released cameras that are compatible with these mounts are Sigma fp L, Leica SL2-S and Panasonic S5 for the Leica SL Mount and Sigma fp L, Leica SL2-S and Panasonic S5 for the Leica L Mount.
Sigma 35mm F1.2 DG DN Art is also available in Sony E mount.
Sigma 35mm F1.4 DG HSM is also available in Canon EF , Pentax KAF3, Sony Alpha, Sigma SA and Nikon F (FX) mounts.