The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Sigma 24mm F1.4 DG DN A 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 24mm F1.4 DG DN A with a length of 96mm, is 34mm shorter. Besides being longer, the Sigma 20mm F1.4 DG HSM A also has a larger diameter of 91mm compared to the Sigma 24mm F1.4 DG DN A's 76mm diameter.
Below you can find a scaled side-by-side image of Sigma 24mm F1.4 DG DN A 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 24mm F1.4 DG DN A 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 24mm F1.4 DG DN A weighs 520g, which means it is 430g (45%) lighter than the Sigma 20mm F1.4 DG HSM A which has a weight of 950g.
Lens Mounts
The Sigma 24mm F1.4 DG DN A has the Sony E lens mount whereas the Sigma 20mm F1.4 DG HSM A has the Canon EF 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 Blackmagic URSA 12K LF , Z CAM E2-F6 II 6K and Z CAM E2-S6 II 6K for the Canon EF Mount.
Nikon F (FX) , Sigma SA and Leica L mounts.
Focal Range
Sigma 24mm F1.4 DG DN A is a prime lens with fixed focal lenght of 24mm. 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 Sigma 20mm F1.4 DG HSM A is a prime lens with fixed focal lenght of 20mm. When it is mounted on an APS-C sensor camera with 1.6x crop, it provides a 35mm (FF) equivalent of 32mm .
