The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Sigma 16-28mm F2.8 E 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 16-28mm F2.8 E with a length of 101mm, is 29mm shorter. Besides being longer, the Sigma 20mm F1.4 DG HSM A also has a larger diameter of 91mm compared to the Sigma 16-28mm F2.8 E's 77mm diameter.
Below you can find a scaled side-by-side image of Sigma 16-28mm F2.8 E 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 16-28mm F2.8 E 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 16-28mm F2.8 E weighs 450g, which means it is 500g (52%) lighter than the Sigma 20mm F1.4 DG HSM A which has a weight of 950g.
Lens Mounts
The Sigma 16-28mm F2.8 E has the Sony E lens mount whereas the Sigma 20mm F1.4 DG HSM A has the Sigma SA lens mount . Some of the latest released cameras that are compatible with these mounts are Sony FX5 , Sony A7R VI and Sony A7 V for the Sony E Mount and Sigma Quattro , Sigma Quattro H and Sigma SD1 Merrill for the Sigma SA Mount.
Canon EF , Nikon F (FX) and Leica L mounts.
Focal Range
Sigma 16-28mm F2.8 E has a focal range of 16-28mm and
1.8X zoom ratio . When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of
24 - 42mm .
On the other hand, the Sigma 20mm F1.4 DG HSM A is a prime lens with fixed focal lenght of 20mm.
