The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Sigma 20mm F2 DG DN C and the Sony 12-24mm F2.8 GM 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 12-24mm F2.8 GM is the longer of the two lenses at 137mm. The Sigma 20mm F2 DG DN C with a length of 72mm, is 65mm shorter. Besides being longer, the Sony 12-24mm F2.8 GM also has a larger diameter of 98mm compared to the Sigma 20mm F2 DG DN C's 70mm diameter.
Below you can find a scaled side-by-side image of Sigma 20mm F2 DG DN C and Sony 12-24mm F2.8 GM to get a better idea of how their sizes compare in real life.
Comparison image of the Sigma 20mm F2 DG DN C and the Sony 12-24mm F2.8 GM 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 20mm F2 DG DN C weighs 370g, which means it is 477g (56%) lighter than the Sony 12-24mm F2.8 GM which has a weight of 847g.
Lens Mounts
Both the Sigma 20mm F2 DG DN C and the Sony 12-24mm F2.8 GM 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 .
Focal Range
Sigma 20mm F2 DG DN C 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
30mm .
On the other hand, the Sony 12-24mm F2.8 GM has a focal range of 12-24mm and 2.0X zoom ratio . When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of 18 - 36mm .
