The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Laowa 17mm f4 TS 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 Laowa 17mm f4 TS with a length of 111mm, is 1mm shorter. On the other hand, the Laowa 17mm f4 TS has a larger diameter of 93mm 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. Canon RF 10-20mm F4 L IS STM weighs 570g, 29% (240g) lighter than the Laowa 17mm f4 TS's weight of 810g.
Lens Mounts
Both the Laowa 17mm f4 TS 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.
Laowa 17mm f4 TS is also available in the Leica L , Sony E and Nikon Z mounts.
Focal Range
Laowa 17mm f4 TS is a prime lens with fixed focal lenght of 17mm. When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of
25.5mm.
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.
