The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Sigma 50mm F2 C and the Sigma 20mm F2 DG DN C 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 F2 DG DN C is the longer of the two lenses at 72mm. The Sigma 50mm F2 C with a length of 70mm, is 2mm shorter. On the other hand, there is no difference between the max diameters of these lenses, both coming at 70mm.
Below you can find a scaled side-by-side image of Sigma 50mm F2 C and Sigma 20mm F2 DG DN C to get a better idea of how their sizes compare in real life.
Comparison image of the Sigma 50mm F2 C and the Sigma 20mm F2 DG DN C 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 50mm F2 C weighs 345g, which means it is 25g (6%) lighter than the Sigma 20mm F2 DG DN C which has a weight of 370g.
Filter Threads
The Sigma 50mm F2 C has a filter size of 58mm whereas the Sigma 20mm F2 DG DN C has a 62mm diameter. Larger filters are generally more expensive than the smaller ones given all the other features are equal.
Below are links to the 58mm filters that we recommend you to consider for the Sigma 50mm F2 C:
And these are the 62mm filters that we recommend for the Sigma 20mm F2 DG DN C:
Lens Mounts
Both the Sigma 50mm F2 C and the Sigma 20mm F2 DG DN C 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 .
Leica L mount.
Focal Range
Sigma 50mm F2 C is a prime lens with fixed focal lenght of 50mm. When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of
75mm .
On the other hand, the 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 .
