The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Canon RF 100-300mm f2.8 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 100-300mm f2.8 is the longer of the two lenses at 323mm. The Canon RF 100-500mm with a length of 208mm, is 115mm shorter. Besides being longer, the Canon RF 100-300mm f2.8 also has a larger diameter of 128mm compared to the Canon RF 100-500mm's 94mm diameter.
Below you can find a scaled side-by-side image of Canon RF 100-300mm f2.8 and Canon RF 100-500mm to get a better idea of how their sizes compare in real life.
Comparison image of the Canon RF 100-300mm f2.8 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, 47% (1225g) lighter than the Canon RF 100-300mm f2.8's weight of 2590g.
Below you can find the dimension and weight table of the Telephoto Zoom Lenses in Canon RF Mount for size comparison purposes.
Super Telephoto Lenses in Canon RF Mount for Size Comparison
Filter Threads
The Canon RF 100-300mm f2.8 has a filter size of 112mm whereas the Canon RF 100-500mm has a 77mm diameter. Larger filters are generally more expensive than the smaller ones given all the other features are equal.
Below are links to the 112mm filters that we recommend you to consider for the Canon RF 100-300mm f2.8:
And these are the 77mm filters that we recommend for the Canon RF 100-500mm:
Lens Mounts
Both the Canon RF 100-300mm f2.8 and the Canon RF 100-500mm has the same Canon RF lens mount . Some of the latest released cameras that are compatible with the Canon RF lenses are Canon R6 V , Canon R6 III and Canon C50 .
Focal Range
Canon RF 100-300mm f2.8 has a focal range of 100-300mm and
3.0X zoom ratio . When it is mounted on an APS-C sensor camera with 1.6x crop, it provides a 35mm (FF) equivalent of
160 - 480mm .
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 .