The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Canon RF 7-14mm F2.8-3.5 and the Venus 15mm f4.5 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 7-14mm F2.8-3.5 is the longer of the two lenses at 109mm. The Venus 15mm f4.5 with a length of 48mm, is 61mm shorter. Besides being longer, the Canon RF 7-14mm F2.8-3.5 also has a larger diameter of 77mm compared to the Venus 15mm f4.5's 70mm 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 15mm f4.5 weighs 308g, 35% (168g) lighter than the Canon RF 7-14mm F2.8-3.5's weight of 476g.
Lens Mounts
Both the Canon RF 7-14mm F2.8-3.5 and the Venus 15mm f4.5 has the same Canon RF lens mount. Some of the latest released cameras that are compatible with the Canon RF lenses are Canon R6 V, Canon R6 III and Canon C50.
Venus 15mm f4.5 is also available in Sony E , Nikon Z and Leica L mounts.
Focal Range
Canon RF 7-14mm F2.8-3.5 has a focal range of 7-14mm and
2.0X zoom ratio . When it is mounted on an APS-C sensor camera with 1.6x crop, it provides a 35mm (FF) equivalent of
11.2 - 22.4mm.
On the other hand, the Venus 15mm f4.5 is a prime lens with fixed focal lenght of 15mm. When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of 22.5mm.