The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Venus 8-15mm f2.8 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 Venus 8-15mm f2.8 with a length of 76mm, is 54mm shorter. On the other hand, the Venus 8-15mm f2.8 has a larger diameter of 95mm compared to the Sigma 20mm F1.4 DG HSM A's 91mm 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. Venus 8-15mm f2.8 weighs 650g, which means it is 300g (31%) lighter than the Sigma 20mm F1.4 DG HSM A which has a weight of 950g.
Lens Mounts
Both the Venus 8-15mm f2.8 and the Sigma 20mm F1.4 DG HSM A has the same Leica L lens mount. Some of the latest released cameras that are compatible with the Leica L lenses are Leica SL3-P, Panasonic S1 II and Panasonic S1 IIE.
Venus 8-15mm f2.8 is also available in the Sony E , Nikon Z and Canon RF mounts.
Sigma 20mm F1.4 DG HSM A is also available in Canon EF , Nikon F (FX) and Sigma SA mounts.
Focal Range
Venus 8-15mm f2.8 has a focal range of 8-15mm and
1.9X zoom ratio . When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of
12 - 22.5mm.
On the other hand, the Sigma 20mm F1.4 DG HSM A is a prime lens with fixed focal lenght of 20mm.
