The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Venus Laowa 4mm F2.8 Z and the Nikon Z 20mm F1.8 S 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. Nikon Z 20mm F1.8 S is the longer of the two lenses at 109mm. The Venus Laowa 4mm F2.8 Z with a length of 26mm, is 83mm shorter. Besides being longer, the Nikon Z 20mm F1.8 S also has a larger diameter of 85mm compared to the Venus Laowa 4mm F2.8 Z's 61mm diameter.
Below you can find a scaled side-by-side image of Venus Laowa 4mm F2.8 Z and Nikon Z 20mm F1.8 S to get a better idea of how their sizes compare in real life.
Comparison image of the Venus Laowa 4mm F2.8 Z and the Nikon Z 20mm F1.8 S 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. Venus Laowa 4mm F2.8 Z weighs 135g, which means it is 370g (73%) lighter than the Nikon Z 20mm F1.8 S which has a weight of 505g.
Below you can find the dimension and weight table of the Wideangle Fisheye Prime Lenses in Nikon Z Mount for size comparison purposes.
Ultra-Wideangle Nikon Z Mount
Lens Mounts
Both the Venus Laowa 4mm F2.8 Z and the Nikon Z 20mm F1.8 S has the same Nikon Z lens mount . Some of the latest released cameras that are compatible with the Nikon Z lenses are RED Komodo-X 6K Z , Nikon Z50 II and Nikon Z30 .
Focal Range
Venus Laowa 4mm F2.8 Z is a prime lens with fixed focal lenght of 4mm which has an effective (full-frame 35mm equivalent) focal range of
6mm when used on a APS-C / DX format camera.
On the other hand, the Nikon Z 20mm F1.8 S 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 .
