The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Canon RF 100-500mm and the Sigma 100-400mm F5-6.3 DG OS HSM 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 RF 100-500mm is the longer of the two lenses at 208mm. The Sigma 100-400mm F5-6.3 DG OS HSM with a length of 182mm, is 26mm shorter. Besides being longer, the Canon RF 100-500mm also has a larger diameter of 94mm compared to the Sigma 100-400mm F5-6.3 DG OS HSM'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. Sigma 100-400mm F5-6.3 DG OS HSM weighs 1160g, 15% (205g) lighter than the Canon RF 100-500mm's weight of 1365g.
Filter Threads
The Canon RF 100-500mm has a filter size of 77mm whereas the Sigma 100-400mm F5-6.3 DG OS HSM has a 67mm 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 RF 100-500mm:
And these are the 67mm filters that we recommend for the Sigma 100-400mm F5-6.3 DG OS HSM:
Lens Mounts
The Canon RF 100-500mm has the Canon RF lens mount whereas the Sigma 100-400mm F5-6.3 DG OS HSM has the Sigma SA lens mount. Some of the latest released cameras that are compatible with these mounts are Canon R6 V, Canon R6 III and Canon C50 for the Canon RF Mount and Sigma Quattro, Sigma Quattro H and Sigma SD1 Merrill for the Sigma SA Mount.
Sigma 100-400mm F5-6.3 DG OS HSM is also available in Nikon F (FX) and Canon EF mounts.
Focal Range
Canon RF 100-500mm has a focal range of 100-500mm and
5.0X zoom ratio . When it is mounted on an APS-C sensor camera with 1.6x crop, it provides a 35mm (FF) equivalent of
160 - 800mm.
On the other hand, the Sigma 100-400mm F5-6.3 DG OS HSM has a focal range of 100-400mm and 4.0X zoom ratio .
