The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Sigma 12-24mm F4 DG HSM 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. Sigma 12-24mm F4 DG HSM is the longer of the two lenses at 132mm. The Canon 16-35mm F2.8L III with a length of 128mm, is 4mm shorter. Besides being longer, the Sigma 12-24mm F4 DG HSM also has a larger diameter of 101mm compared to the Canon 16-35mm F2.8L III's 89mm diameter.
Below you can find a scaled side-by-side image of Sigma 12-24mm F4 DG HSM and Canon 16-35mm F2.8L III to get a better idea of how their sizes compare in real life.
Comparison image of the Sigma 12-24mm F4 DG HSM and the Canon 16-35mm F2.8L III 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. Canon 16-35mm F2.8L III weighs 790g, 31% (361g) lighter than the Sigma 12-24mm F4 DG HSM's weight of 1151g.
Below you can find the dimension and weight table of the Wideangle Zoom Lenses in Canon EF Mount for size comparison purposes.
Ultra-Wideangle Lenses in Canon EF Mount for Size Comparison
Lens Mounts
Both the Sigma 12-24mm F4 DG HSM 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 Blackmagic URSA 12K LF , Z CAM E2-F6 II 6K and Z CAM E2-S6 II 6K .
Sigma 12-24mm F4 DG HSM is also available in the Sigma SA and Nikon F (FX) mounts.
Focal Range
Sigma 12-24mm F4 DG HSM has a focal range of 12-24mm 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
19.2 - 38.4mm .
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 .