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 L and the Venus Laowa 4mm F2.8 L 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 L is the longer of the two lenses at 95mm. The Venus Laowa 4mm F2.8 L with a length of 26mm, is 69mm shorter. Besides being longer, the 7artisans 10mm f2.8 II L also has a larger diameter of 75mm compared to the Venus Laowa 4mm F2.8 L'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 L weighs 135g, 77% (467g) lighter than the 7artisans 10mm f2.8 II L's weight of 602g.
Below you can find the dimension and weight table of the Wideangle Fisheye Prime Lenses in Leica L Mount for size comparison purposes.
Ultra-Wideangle Lenses in Leica L Mount for Size Comparison
Lens Mounts
Both the 7artisans 10mm f2.8 II L and the Venus Laowa 4mm F2.8 L 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.
Focal Range
7artisans 10mm f2.8 II L 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 L 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.
