The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Sigma 10-18mm F2.8 DC DN C and the Sigma 20mm F1.4 DG HSM A for their suitability to various photography scenarios:
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 10-18mm F2.8 DC DN C with a length of 64mm, is 66mm shorter. Besides being longer, the Sigma 20mm F1.4 DG HSM A also has a larger diameter of 91mm compared to the Sigma 10-18mm F2.8 DC DN C's 72mm diameter.
Below you can find a scaled side-by-side image of Sigma 10-18mm F2.8 DC 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 10-18mm F2.8 DC 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 10-18mm F2.8 DC DN C weighs 260g, which means it is 690g (72%) lighter than the Sigma 20mm F1.4 DG HSM A which has a weight of 950g.
Lens Mounts
Both the Sigma 10-18mm F2.8 DC 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 TL2 , Leica TL and Leica T Typ 701 .
Sony E , Fujifilm X and Canon RF mounts.
Canon EF , Nikon F (FX) and Sigma SA mounts.
Focal Range
Sigma 10-18mm F2.8 DC DN C has a focal range of 10-18mm and
1.8X zoom ratio which has an effective (full-frame 35mm equivalent) focal range of
15-27mm when used on a APS-C / DX format camera.
On the other hand, the Sigma 20mm F1.4 DG HSM A is a prime lens with fixed focal lenght of 20mm.
