The type of photography that you are planning to use is an important decision factor. Here we have evaluated the 7Artisans 14mm F2.8 and the Canon RF 10-20mm F4 L IS 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 10-20mm F4 L IS STM is the longer of the two lenses at 112mm. The 7Artisans 14mm F2.8 with a length of 87mm, is 25mm shorter. On the other hand, the 7Artisans 14mm F2.8 has a larger diameter of 89mm compared to the Canon RF 10-20mm F4 L IS STM's 84mm 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. 7Artisans 14mm F2.8 weighs 504g, which means it is 66g (11%) lighter than the Canon RF 10-20mm F4 L IS STM which has a weight of 570g.
Lens Mounts
Both the 7Artisans 14mm F2.8 and the Canon RF 10-20mm F4 L IS STM 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.
7Artisans 14mm F2.8 is also available in the Sony E , Nikon Z and Leica L mounts.
Focal Range
7Artisans 14mm F2.8 is a prime lens with fixed focal lenght of 14mm. When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of
21mm.
On the other hand, the Canon RF 10-20mm F4 L IS STM has a focal range of 10-20mm and 2.0X zoom ratio . When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of 15 - 30mm.