The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Sony FE 100-400mm F4.5-5.6 and the Canon RF 100-500mm 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 FE 100-400mm F4.5-5.6 with a length of 205mm, is 3mm shorter. On the other hand, there is no difference between the max diameters of these lenses, both coming at 94mm.
Below you can find a scaled side-by-side image of Sony FE 100-400mm F4.5-5.6 and Canon RF 100-500mm to get a better idea of how their sizes compare in real life.
Comparison image of the Sony FE 100-400mm F4.5-5.6 and the Canon RF 100-500mm 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. Canon RF 100-500mm weighs 1365g, 2% (30g) lighter than the Sony FE 100-400mm F4.5-5.6's weight of 1395g.
Filter Threads
Both the Sony FE 100-400mm F4.5-5.6 and the Canon RF 100-500mm 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 Sony FE 100-400mm F4.5-5.6 has the Sony E lens mount whereas the Canon RF 100-500mm has the Canon RF 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 Canon R6 V , Canon R6 III and Canon C50 for the Canon RF Mount.
Focal Range
Sony FE 100-400mm F4.5-5.6 has a focal range of 100-400mm and
4.0X zoom ratio . When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of
150 - 600mm .
On the other hand, the 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 .