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 Samyang AF 85mm F1.4 RF 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 135mm F1.8 L IS USM is the longer of the two lenses at 130mm. The Samyang AF 85mm F1.4 RF with a length of 98mm, is 32mm shorter. Besides being longer, the Canon RF 135mm F1.8 L IS USM also has a larger diameter of 89mm compared to the Samyang AF 85mm F1.4 RF's 88mm diameter.
Below you can find a scaled side-by-side image of Canon RF 135mm F1.8 L IS USM and Samyang AF 85mm F1.4 RF 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 Samyang AF 85mm F1.4 RF 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. Samyang AF 85mm F1.4 RF weighs 584g, 37% (351g) lighter than the Canon RF 135mm F1.8 L IS USM's weight of 935g.
Below you can find the dimension and weight table of the Telephoto Prime Lenses in Canon RF Mount for size comparison purposes.
Telephoto Canon RF Mount
Filter Threads
The Canon RF 135mm F1.8 L IS USM has a filter size of 82mm whereas the Samyang AF 85mm F1.4 RF 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 82mm filters that we recommend you to consider for the Canon RF 135mm F1.8 L IS USM:
And these are the 77mm filters that we recommend for the Samyang AF 85mm F1.4 RF:
Lens Mounts
Both the Canon RF 135mm F1.8 L IS USM and the Samyang AF 85mm F1.4 RF 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 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 .
On the other hand, the Samyang AF 85mm F1.4 RF is a prime lens with fixed focal lenght of 85mm.
