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 RF and the Canon RF 16mm F2.8 STM 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. Canon RF 16mm F2.8 STM is the longer of the two lenses at 40mm. The Venus Laowa 4mm F2.8 RF with a length of 26mm, is 14mm shorter. Besides being longer, the Canon RF 16mm F2.8 STM also has a larger diameter of 69mm compared to the Venus Laowa 4mm F2.8 RF's 61mm diameter.
Below you can find a scaled side-by-side image of Venus Laowa 4mm F2.8 RF and Canon RF 16mm F2.8 STM to get a better idea of how their sizes compare in real life.
Comparison image of the Venus Laowa 4mm F2.8 RF and the Canon RF 16mm F2.8 STM 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 RF weighs 135g, which means it is 30g (18%) lighter than the Canon RF 16mm F2.8 STM which has a weight of 165g.
Below you can find the dimension and weight table of the Wideangle Fisheye Prime Lenses in Canon RF Mount for size comparison purposes.
Ultra-Wideangle Canon RF Mount
Lens Mounts
Both the Venus Laowa 4mm F2.8 RF and the Canon RF 16mm F2.8 STM has the same Canon RF lens mount . Some of the latest released cameras that are compatible with the Canon RF lenses are RED Komodo-X 6K , RED Komodo 6K and Canon EOS C70 .
Focal Range
Venus Laowa 4mm F2.8 RF 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 Canon RF 16mm F2.8 STM is a prime lens with fixed focal lenght of 16mm. When it is mounted on an APS-C sensor camera with 1.6x crop, it provides a 35mm (FF) equivalent of 25.6mm .
