The type of photography that you are planning to use is an important decision factor. Here we have evaluated the 7artisans 10mm f2.8 II Z and the Venus Laowa 4mm F2.8 E 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. 7artisans 10mm f2.8 II Z is the longer of the two lenses at 95mm. The Venus Laowa 4mm F2.8 E with a length of 26mm, is 69mm shorter. Besides being longer, the 7artisans 10mm f2.8 II Z also has a larger diameter of 75mm compared to the Venus Laowa 4mm F2.8 E's 61mm 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 Laowa 4mm F2.8 E weighs 135g, 77% (467g) lighter than the 7artisans 10mm f2.8 II Z's weight of 602g.
Lens Mounts
The 7artisans 10mm f2.8 II Z has the Nikon Z lens mount whereas the Venus Laowa 4mm F2.8 E has the Sony E 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 Sony ZV-E10 II, Sony A6700 and Sony FX30 for the Sony E Mount.
Focal Range
7artisans 10mm f2.8 II Z is a prime lens with fixed focal lenght of 10mm. When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of
15mm.
On the other hand, the Venus Laowa 4mm F2.8 E 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.
