The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Sigma 20mm F1.4 DG DN A and the Sony FE 16-35mm F2.8 GM II 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. Sony FE 16-35mm F2.8 GM II is the longer of the two lenses at 112mm. The Sigma 20mm F1.4 DG DN A with a length of 111mm, is 1mm shorter. On the other hand, there is no difference between the max diameters of these lenses, both coming at 88mm.
Below you can find a scaled side-by-side image of Sigma 20mm F1.4 DG DN A and Sony FE 16-35mm F2.8 GM II to get a better idea of how their sizes compare in real life.
Comparison image of the Sigma 20mm F1.4 DG DN A and the Sony FE 16-35mm F2.8 GM II 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. Sony FE 16-35mm F2.8 GM II weighs 547g, 13% (88g) lighter than the Sigma 20mm F1.4 DG DN A's weight of 635g.
Filter Threads
Both the Sigma 20mm F1.4 DG DN A and the Sony FE 16-35mm F2.8 GM II have the same Filter thread size of 82mm .
Below are links to the 82mm filters that we recommend you to consider for these lenses:
Lens Mounts
Both the Sigma 20mm F1.4 DG DN A and the Sony FE 16-35mm F2.8 GM II has the same Sony E lens mount . Some of the latest released cameras that are compatible with the Sony E lenses are Sony FX5 , Sony A7R VI and Sony A7 V .
Sigma 20mm F1.4 DG DN A is also available in the Leica L mount.
Focal Range
Sigma 20mm F1.4 DG DN A is a prime lens with fixed focal lenght of 20mm. When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of
36mm .
On the other hand, the Sony FE 16-35mm F2.8 GM II has a focal range of 16-35mm and 2.2X zoom ratio . When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of 24 - 52.5mm .