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 Sony 70-400mm F4-5.6 G SSM II 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 Sony 70-400mm F4-5.6 G SSM II with a length of 196mm, is 12mm shorter. On the other hand, the Sony 70-400mm F4-5.6 G SSM II has a larger diameter of 95mm compared to the Canon RF 100-500mm's 94mm 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. Canon RF 100-500mm weighs 1365g, which means it is 135g (8%) lighter than the Sony 70-400mm F4-5.6 G SSM II which has a weight of 1500g.
Filter Threads
Both the Canon RF 100-500mm and the Sony 70-400mm F4-5.6 G SSM II have the same Filter thread size of 77mm.
Below are links to the 77mm filters that we recommend you to consider for these lenses:
Lens Mounts
The Canon RF 100-500mm has the Canon RF lens mount whereas the Sony 70-400mm F4-5.6 G SSM II has the Sony Alpha 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 Sony A99 II, Sony A68 and Sony A77 II for the Sony Alpha Mount.
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 Sony 70-400mm F4-5.6 G SSM II has a focal range of 70-400mm and 5.7X zoom ratio . When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of 105 - 600mm.