The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Viltrox 14mm F4.0 and the Viltrox AF 20mm f2.8 Z 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. Viltrox AF 20mm f2.8 Z is the longer of the two lenses at 60mm. The Viltrox 14mm F4.0 with a length of 56mm, is 4mm shorter. On the other hand, there is no difference between the max diameters of these lenses, both coming at 65mm.
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, 7% (13g) lighter than the Viltrox 14mm F4.0's weight of 170g.
Lens Mounts
The Viltrox 14mm F4.0 has the Sony E lens mount whereas the Viltrox AF 20mm f2.8 Z has the Nikon Z 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 Nikon ZR, Nikon Z5 II and RED Komodo-X 6K Z for the Nikon Z Mount.
Focal Range
Viltrox 14mm F4.0 is a prime lens with fixed focal lenght of 14mm. When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of
21mm.
On the other hand, the 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.