The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Canon RF 85mm F1.2L USM DS and the Samyang MF 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 85mm F1.2L USM DS is the longer of the two lenses at 117mm. The Samyang MF 85mm F1.4 RF with a length of 99mm, is 18mm shorter. Besides being longer, the Canon RF 85mm F1.2L USM DS also has a larger diameter of 103mm compared to the Samyang MF 85mm F1.4 RF's 78mm diameter.
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Below you can find a scaled side-by-side image of Canon RF 85mm F1.2L USM DS and Samyang MF 85mm F1.4 RF 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. Samyang MF 85mm F1.4 RF weighs 730g, 38% (465g) lighter than the Canon RF 85mm F1.2L USM DS's weight of 1195g.
Below you can find the dimension and weight table of the Telephoto Prime Lenses in Canon RF Mount for size comparison purposes.
Telephoto Lenses in Canon RF Mount for Size Comparison
Filter Threads
The Canon RF 85mm F1.2L USM DS has a filter size of 82mm whereas the Samyang MF 85mm F1.4 RF has a 72mm 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 85mm F1.2L USM DS:
And these are the 72mm filters that we recommend for the Samyang MF 85mm F1.4 RF:
Lens Mounts
Both the Canon RF 85mm F1.2L USM DS and the Samyang MF 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 R100, Canon R8 and Canon R50.
Focal Range
Both lenses have the same focal range of
85mm but while Canon RF 85mm F1.2L USM DS has the fastest aperture of
F1.2, the Samyang MF 85mm F1.4 RF's widest aperture value is
F1.4.