The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Sony FE 16mm F1.8 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. Sony FE 16mm F1.8 is the longer of the two lenses at 75mm. The Venus Laowa 4mm F2.8 E with a length of 26mm, is 49mm shorter. Besides being longer, the Sony FE 16mm F1.8 also has a larger diameter of 74mm compared to the Venus Laowa 4mm F2.8 E's 61mm diameter.
Below you can find a scaled side-by-side image of Sony FE 16mm F1.8 and Venus Laowa 4mm F2.8 E to get a better idea of how their sizes compare in real life.
Comparison image of the Sony FE 16mm F1.8 and the Venus Laowa 4mm F2.8 E 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 E weighs 135g, 55% (169g) lighter than the Sony FE 16mm F1.8's weight of 304g.
Below you can find the dimension and weight table of the Wideangle Prime Lenses in Sony E Mount for size comparison purposes.
Ultra-Wideangle Lenses in Sony E Mount for Size Comparison
Lens Mounts
Both the Sony FE 16mm F1.8 and the Venus Laowa 4mm F2.8 E has the same Sony E lens mount . Some of the latest released cameras that are compatible with the Sony E lenses are Sony FX5 , Sony A7R VI and Sony A7 V .
Focal Range
Sony FE 16mm F1.8 is a prime lens with fixed focal lenght of 16mm. When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of
24mm .
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.