The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Canon RF 135mm F1.8 L IS USM and the Canon RF 70-200mm F2.8L IS USM for their suitability to various photography scenarios:
Size and Weight Comparison
The size of a lens is an important deciding factor when comparing two lenses. Canon RF 70-200mm F2.8L IS USM is the longer of the two lenses at 146mm. The Canon RF 135mm F1.8 L IS USM with a length of 130mm, is 16mm shorter. Besides being longer, the Canon RF 70-200mm F2.8L IS USM also has a larger diameter of 90mm compared to the Canon RF 135mm F1.8 L IS USM's 89mm diameter.
Below you can find a scaled side-by-side image of Canon RF 135mm F1.8 L IS USM and Canon RF 70-200mm F2.8L IS USM to get a better idea of how their sizes compare in real life.
Comparison image of the Canon RF 135mm F1.8 L IS USM and the Canon RF 70-200mm F2.8L IS USM Size and Weight The weight of a lens is as important as its external dimensions, especially if you are planning to hand hold your camera and lens combination for longer periods. Canon RF 135mm F1.8 L IS USM weighs 935g, which means it is 135g (12%) lighter than the Canon RF 70-200mm F2.8L IS USM which has a weight of 1070g.
Lens Mounts
Both the Canon RF 135mm F1.8 L IS USM and the Canon RF 70-200mm F2.8L IS USM has the same Canon RF lens mount. Some of the latest released cameras that are compatible with the Canon RF lenses are Canon R8, Canon R50 and Canon R6 II.
Focal Range
Canon RF 135mm F1.8 L IS USM is a prime lens with fixed focal lenght of 135mm. When it is mounted on an APS-C sensor camera with 1.6x crop, it provides a 35mm (FF) equivalent of 216mm.
Canon RF 70-200mm F2.8L IS USM has a focal range of 70-200mm and 2.9X zoom ratio . When it is mounted on an APS-C sensor camera with 1.6x crop, it provides a 35mm (FF) equivalent of 112 - 320mm.