Size and Weight Comparison The size of a lens is a crucial factor to consider when comparing two lenses. Sigma 20mm F1.4 DG HSM A is the longer of the two lenses at 130mm. The Sigma 17mm F4 DG DN C with a length of 49mm, is 81mm shorter. Besides being longer, the Sigma 20mm F1.4 DG HSM A also has a larger diameter of 91mm compared to the Sigma 17mm F4 DG DN C's 64mm diameter.
Below you can find a scaled side-by-side image of Sigma 17mm F4 DG DN C and Sigma 20mm F1.4 DG HSM A to get a better idea of how their sizes compare in real life.
Comparison image of the Sigma 17mm F4 DG DN C and the Sigma 20mm F1.4 DG HSM A Size and Weight The weight of a lens is equally significant as its external dimensions, particularly if you intend to handhold your camera and lens combination for extended periods. Sigma 17mm F4 DG DN C weighs 225g, which means it is 725g (76%) lighter than the Sigma 20mm F1.4 DG HSM A which has a weight of 950g.
Lens Mounts
Both the Sigma 17mm F4 DG DN C and the Sigma 20mm F1.4 DG HSM A has the same Leica L lens mount . Some of the latest released cameras that are compatible with the Leica L lenses are Leica SL3-P , Panasonic S1 II and Panasonic S1 IIE .
Canon EF , Nikon F (FX) and Sigma SA mounts.
Focal Range
Sigma 17mm F4 DG DN C is a prime lens with fixed focal lenght of 17mm.
On the other hand, the Sigma 20mm F1.4 DG HSM A is a prime lens with fixed focal lenght of 20mm.
