The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Canon RF 85mm F2 Macro IS STM and the Canon RF 100mm F2.8L Macro IS 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 100mm F2.8L Macro IS is the longer of the two lenses at 148mm. The Canon RF 85mm F2 Macro IS STM with a length of 91mm, is 57mm shorter. Besides being longer, the Canon RF 100mm F2.8L Macro IS also has a larger diameter of 82mm compared to the Canon RF 85mm F2 Macro IS STM's 78mm diameter.
tt
Below you can find a scaled side-by-side image of Canon RF 85mm F2 Macro IS STM and Canon RF 100mm F2.8L Macro IS to get a better idea of how their sizes compare in real life.
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 85mm F2 Macro IS STM weighs 500g, which means it is 230g (31%) lighter than the Canon RF 100mm F2.8L Macro IS which has a weight of 730g.
Below you can find the dimension and weight table of the Macro Prime Lenses in Canon RF Mount for size comparison purposes.
Macro Lenses in Canon RF Mount for Size Comparison
Filter Threads
Both the Canon RF 85mm F2 Macro IS STM and the Canon RF 100mm F2.8L Macro IS have the same Filter thread size of 67mm.
Below are links to the 67mm filters that we recommend you to consider for these lenses:
Lens Mounts
Both the Canon RF 85mm F2 Macro IS STM and the Canon RF 100mm F2.8L Macro IS has the same Canon RF lens mount. Some of the latest released cameras that are compatible with the Canon RF lenses are Canon R100, Canon R8 and Canon R50.
Focal Range
Canon RF 85mm F2 Macro IS STM is a prime lens with fixed focal lenght of 85mm. When it is mounted on an APS-C sensor camera with 1.6x crop, it provides a 35mm (FF) equivalent of
136mm.
On the other hand, the Canon RF 100mm F2.8L Macro IS is a prime lens with fixed focal lenght of 100mm. When it is mounted on an APS-C sensor camera with 1.6x crop, it provides a 35mm (FF) equivalent of 160mm.