The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Viltrox AF 20mm f2.8 Z and the Sigma 24mm F1.8 EX DG 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 F1.8 EX DG is the longer of the two lenses at 83mm. The Viltrox AF 20mm f2.8 Z with a length of 60mm, is 23mm shorter. Besides being longer, the Sigma 24mm F1.8 EX DG also has a larger diameter of 84mm compared to the Viltrox AF 20mm f2.8 Z's 65mm diameter.
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. Viltrox AF 20mm f2.8 Z weighs 157g, which means it is 328g (67%) lighter than the Sigma 24mm F1.8 EX DG which has a weight of 485g.
Filter Threads
The Viltrox AF 20mm f2.8 Z has a filter size of 52mm whereas the Sigma 24mm F1.8 EX DG 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 52mm filters that we recommend you to consider for the Viltrox AF 20mm f2.8 Z:
And these are the 77mm filters that we recommend for the Sigma 24mm F1.8 EX DG:
Lens Mounts
The Viltrox AF 20mm f2.8 Z has the Nikon Z lens mount whereas the Sigma 24mm F1.8 EX DG has the Four Thirds lens mount. Some of the latest released cameras that are compatible with these mounts are Nikon ZR, Nikon Z5 II and RED Komodo-X 6K Z for the Nikon Z Mount and Olympus E-5, Olympus E-600 and Olympus E-620 for the Four Thirds Mount.
Sigma 24mm F1.8 EX DG is also available in Canon EF , Nikon F (FX), Pentax KAF, Sony Alpha, Sigma SA, Canon EF, Pentax KAF, Sony Alpha, Sigma SA and Nikon F (FX) mounts.
Focal Range
Viltrox AF 20mm f2.8 Z 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 F1.8 EX DG is a prime lens with fixed focal lenght of 24mm.
