The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Viltrox 9mm F2.8 Z and the Venus Laowa 4mm 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 9mm F2.8 Z is the longer of the two lenses at 56mm. The Venus Laowa 4mm F2.8 Z with a length of 26mm, is 30mm shorter. Besides being longer, the Viltrox 9mm F2.8 Z also has a larger diameter of 65mm compared to the Venus Laowa 4mm F2.8 Z's 61mm diameter.
Below you can find a scaled side-by-side image of Viltrox 9mm F2.8 Z and Venus Laowa 4mm F2.8 Z to get a better idea of how their sizes compare in real life.
Comparison image of the Viltrox 9mm F2.8 Z and the Venus Laowa 4mm F2.8 Z 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, 22% (40g) lighter than the Viltrox 9mm F2.8 Z's weight of 175g.
Below you can find the dimension and weight table of the Wideangle Prime Lenses in Nikon Z Mount for size comparison purposes.
Ultra-Wideangle Lenses in Nikon Z Mount for Size Comparison
Lens Mounts
Both the Viltrox 9mm F2.8 Z and the Venus Laowa 4mm F2.8 Z 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
Viltrox 9mm F2.8 Z is a prime lens with fixed focal lenght of 9mm which has an effective (full-frame 35mm equivalent) focal range of
13.5mm when used on a APS-C / DX format camera.
On the other hand, the 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.