The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Canon EF 70-200 F2.8L IS III USM and the Sigma 150-600mm F5-6.3 DG OS HSM C 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 150-600mm F5-6.3 DG OS HSM C is the longer of the two lenses at 290mm. The Canon EF 70-200 F2.8L IS III USM with a length of 199mm, is 91mm shorter. Besides being longer, the Sigma 150-600mm F5-6.3 DG OS HSM C also has a larger diameter of 121mm compared to the Canon EF 70-200 F2.8L IS III USM's 89mm diameter.
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Below you can find a scaled side-by-side image of Canon EF 70-200 F2.8L IS III USM and Sigma 150-600mm F5-6.3 DG OS HSM C to get a better idea of how their sizes compare in real life.
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 EF 70-200 F2.8L IS III USM weighs 1440g, which means it is 490g (25%) lighter than the Sigma 150-600mm F5-6.3 DG OS HSM C which has a weight of 1930g.
Filter Threads
The Canon EF 70-200 F2.8L IS III USM has a filter size of 77mm whereas the Sigma 150-600mm F5-6.3 DG OS HSM C has a 95mm diameter. Larger filters are generally more expensive than the smaller ones given all the other features are equal.
Below are links to the 77mm filters that we recommend you to consider for the Canon EF 70-200 F2.8L IS III USM:
And these are the 95mm filters that we recommend for the Sigma 150-600mm F5-6.3 DG OS HSM C:
Lens Mounts
Both the Canon EF 70-200 F2.8L IS III USM and the Sigma 150-600mm F5-6.3 DG OS HSM C has the same Canon EF lens mount. Some of the latest released cameras that are compatible with the Canon EF lenses are Canon 1D X III, Canon 6D MII and Canon 5D MIV.
Sigma 150-600mm F5-6.3 DG OS HSM C is also available in Nikon F (FX) , Sigma SA and Sony Alpha mounts.
Focal Range
Canon EF 70-200 F2.8L IS III USM has a focal range of 70-200mm and
2.9X zoom ratio . When it is mounted on an APS-C sensor camera with 1.6x crop, it provides a 35mm (FF) equivalent of
112 - 320mm.
On the other hand, the Sigma 150-600mm F5-6.3 DG OS HSM C has a focal range of 150-600mm and 4.0X zoom ratio . When it is mounted on an APS-C sensor camera with 1.6x crop, it provides a 35mm (FF) equivalent of 240 - 960mm.