The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Sigma 16-28mm F2.8 E 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 Sigma 16-28mm F2.8 E with a length of 101mm, is 27mm shorter. Besides being longer, the Canon 16-35mm F2.8L III also has a larger diameter of 89mm compared to the Sigma 16-28mm F2.8 E's 77mm diameter.
Below you can find a scaled side-by-side image of Sigma 16-28mm F2.8 E 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 16-28mm F2.8 E 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. Sigma 16-28mm F2.8 E weighs 450g, which means it is 340g (43%) lighter than the Canon 16-35mm F2.8L III which has a weight of 790g.
Filter Threads
The Sigma 16-28mm F2.8 E has a filter size of 72mm whereas the Canon 16-35mm F2.8L III has a 82mm diameter. Larger filters are generally more expensive than the smaller ones given all the other features are equal.
Below are links to the 72mm filters that we recommend you to consider for the Sigma 16-28mm F2.8 E:
And these are the 82mm filters that we recommend for the Canon 16-35mm F2.8L III:
Lens Mounts
The Sigma 16-28mm F2.8 E has the Sony E lens mount whereas the Canon 16-35mm F2.8L III has the Canon EF lens mount . Some of the latest released cameras that are compatible with these mounts are Sony FX5 , Sony A7R VI and Sony A7 V for the Sony E Mount and Blackmagic URSA 12K LF , Z CAM E2-F6 II 6K and Z CAM E2-S6 II 6K for the Canon EF Mount.
Focal Range
Sigma 16-28mm F2.8 E has a focal range of 16-28mm and
1.8X zoom ratio . When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of
24 - 42mm .
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 .