The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Canon RF 75-300mm f4.0-5.6 and the Sony 70-300mm F4.5-5.6 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 75-300mm f4.0-5.6 is the longer of the two lenses at 146mm. The Sony 70-300mm F4.5-5.6 G SSM II with a length of 136mm, is 10mm shorter. On the other hand, the Sony 70-300mm F4.5-5.6 G SSM II has a larger diameter of 83mm compared to the Canon RF 75-300mm f4.0-5.6's 71mm diameter.
Below you can find a scaled side-by-side image of Canon RF 75-300mm f4.0-5.6 and Sony 70-300mm F4.5-5.6 G SSM II to get a better idea of how their sizes compare in real life.
Comparison image of the Canon RF 75-300mm f4.0-5.6 and the Sony 70-300mm F4.5-5.6 G SSM II 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 75-300mm f4.0-5.6 weighs 507g, which means it is 243g (32%) lighter than the Sony 70-300mm F4.5-5.6 G SSM II which has a weight of 750g.
Filter Threads
The Canon RF 75-300mm f4.0-5.6 has a filter size of 58mm whereas the Sony 70-300mm F4.5-5.6 G SSM II has a 62mm diameter. Larger filters are generally more expensive than the smaller ones given all the other features are equal.
Below are links to the 58mm filters that we recommend you to consider for the Canon RF 75-300mm f4.0-5.6:
And these are the 62mm filters that we recommend for the Sony 70-300mm F4.5-5.6 G SSM II:
Lens Mounts
The Canon RF 75-300mm f4.0-5.6 has the Canon RF lens mount whereas the Sony 70-300mm F4.5-5.6 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 75-300mm f4.0-5.6 has a focal range of 75-300mm 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
120 - 480mm .
On the other hand, the Sony 70-300mm F4.5-5.6 G SSM II has a focal range of 70-300mm and 4.3X zoom ratio . When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of 105 - 450mm .