The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Sigma 100-400mm F5-6.3 DG OS HSM and the Canon 100-400mm f4.5-5.6L IS II USM for their suitability to various photography scenarios:
Size and Weight Comparison
Size of a lens is an important deciding factor when comparing two lenses.Canon 100-400mm f4.5-5.6L IS II USM is the longer of the two lenses at 193mm. The Sigma 100-400mm F5-6.3 DG OS HSM with a length of 182mm is 11mm shorter. Besides being longer, the Canon 100-400mm f4.5-5.6L IS II USM also has a larger diameter of 94mm compared to Sigma 100-400mm F5-6.3 DG OS HSM's 86mm diameter.
Weight of a lens is as important as its external dimensions, especially if you are planning to hand hold your camera and lens combination for longer periods. Sigma 100-400mm F5-6.3 DG OS HSM weighs 1160g, which means it is 430g (27%) lighter than the Canon 100-400mm f4.5-5.6L IS II USM which has a weight of 1590g.
Below you can find the dimension and weight table of the 'Telephoto Zoom Lenses in Canon EF Mount for size comparison purposes.
Telephoto Zoom Lenses in Canon EF Mount for Size Comparison
Lens Mounts
Both Sigma 100-400mm F5-6.3 DG OS HSM and Canon 100-400mm f4.5-5.6L IS II USM 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 100-400mm F5-6.3 DG OS HSM is also available in Sigma SA and Nikon F (FX) mounts.
Focal Range