The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Panasonic S 16-35mm F4 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 Panasonic S 16-35mm F4 with a length of 100mm, is 30mm shorter. Besides being longer, the Sigma 20mm F1.4 DG HSM A also has a larger diameter of 91mm compared to the Panasonic S 16-35mm F4's 85mm diameter.
Below you can find a scaled side-by-side image of Panasonic S 16-35mm F4 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 Panasonic S 16-35mm F4 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. Panasonic S 16-35mm F4 weighs 500g, which means it is 450g (47%) lighter than the Sigma 20mm F1.4 DG HSM A which has a weight of 950g.
Lens Mounts
Both the Panasonic S 16-35mm F4 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 .
Sigma 20mm F1.4 DG HSM A is also available in Canon EF , Nikon F (FX) and Sigma SA mounts.
Focal Range
Panasonic S 16-35mm F4 has a focal range of 16-35mm and
2.2X zoom ratio .
On the other hand, the Sigma 20mm F1.4 DG HSM A is a prime lens with fixed focal lenght of 20mm.