The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Samyang 10mm f2.8 and the Canon 16-35mm F2.8L III 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 16-35mm F2.8L III is the longer of the two lenses at 128mm. The Samyang 10mm f2.8 with a length of 77mm, is 51mm shorter. Besides being longer, the Canon 16-35mm F2.8L III also has a larger diameter of 89mm compared to the Samyang 10mm f2.8's 86mm 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. Samyang 10mm f2.8 weighs 580g, which means it is 210g (26%) lighter than the Canon 16-35mm F2.8L III which has a weight of 790g.
Lens Mounts
Both the Samyang 10mm f2.8 and the Canon 16-35mm F2.8L III has the same Canon EF lens mount. Some of the latest released cameras that are compatible with the Canon EF lenses are Canon T8i, Canon 90D and Canon SL3.
Samyang 10mm f2.8 is also available in the Canon EF-M , Fujifilm X, Nikon F (DX), Four Thirds and Micro Four Thirds mounts.
Focal Range
Samyang 10mm f2.8 is a prime lens with fixed focal lenght of 10mm which has an effective (full-frame 35mm equivalent) focal range of
16mm when used on a APS-C / DX format camera.
On the other hand, the Canon 16-35mm F2.8L III has a focal range of 16-35mm and 2.2X zoom ratio . When it is mounted on an APS-C sensor camera with 1.6x crop, it provides a 35mm (FF) equivalent of 25.6 - 56mm.
