The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Canon RF 200-800mm and the Sony FE 400-800mm F6.3-8 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. Sony FE 400-800mm F6.3-8 is the longer of the two lenses at 346mm. The Canon RF 200-800mm with a length of 314mm, is 32mm shorter. Besides being longer, the Sony FE 400-800mm F6.3-8 also has a larger diameter of 120mm compared to the Canon RF 200-800mm's 102mm diameter.
Below you can find a scaled side-by-side image of Canon RF 200-800mm and Sony FE 400-800mm F6.3-8 to get a better idea of how their sizes compare in real life.
Comparison image of the Canon RF 200-800mm and the Sony FE 400-800mm F6.3-8 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 200-800mm weighs 2050g, which means it is 425g (17%) lighter than the Sony FE 400-800mm F6.3-8 which has a weight of 2475g.
Filter Threads
The Canon RF 200-800mm has a filter size of 95mm whereas the Sony FE 400-800mm F6.3-8 has a 105mm diameter. Larger filters are generally more expensive than the smaller ones given all the other features are equal.
Below are links to the 95mm filters that we recommend you to consider for the Canon RF 200-800mm:
And these are the 105mm filters that we recommend for the Sony FE 400-800mm F6.3-8:
Lens Mounts
The Canon RF 200-800mm has the Canon RF lens mount whereas the Sony FE 400-800mm F6.3-8 has the Sony E 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 FX5 , Sony A7R VI and Sony A7 V for the Sony E Mount.
Focal Range
Canon RF 200-800mm has a focal range of 200-800mm 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
320 - 1280mm .
On the other hand, the Sony FE 400-800mm F6.3-8 has a focal range of 400-800mm and 2.0X zoom ratio . When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of 600 - 1200mm .