The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Sony FE 20mm F1.8 G and the Sigma 24mm 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 24mm F1.4 DG HSM A is the longer of the two lenses at 90mm. The Sony FE 20mm F1.8 G with a length of 85mm, is 5mm shorter. Besides being longer, the Sigma 24mm F1.4 DG HSM A also has a larger diameter of 85mm compared to the Sony FE 20mm F1.8 G's 74mm diameter.
Below you can find a scaled side-by-side image of Sony FE 20mm F1.8 G and Sigma 24mm F1.4 DG HSM A to get a better idea of how their sizes compare in real life.
Comparison image of the Sony FE 20mm F1.8 G and the Sigma 24mm 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. Sony FE 20mm F1.8 G weighs 373g, which means it is 292g (43%) lighter than the Sigma 24mm F1.4 DG HSM A which has a weight of 665g.
Filter Threads
The Sony FE 20mm F1.8 G has a filter size of 67mm whereas the Sigma 24mm F1.4 DG HSM A has a 77mm diameter. Larger filters are generally more expensive than the smaller ones given all the other features are equal.
Below are links to the 67mm filters that we recommend you to consider for the Sony FE 20mm F1.8 G:
And these are the 77mm filters that we recommend for the Sigma 24mm F1.4 DG HSM A:
Lens Mounts
The Sony FE 20mm F1.8 G has the Sony E lens mount whereas the Sigma 24mm 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
Sony FE 20mm F1.8 G 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 Sigma 24mm F1.4 DG HSM A is a prime lens with fixed focal lenght of 24mm.
