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 Samyang 85mm F1.4 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 F2 Macro IS STM is the longer of the two lenses at 91mm. The Samyang 85mm F1.4 with a length of 75mm, is 16mm shorter. On the other hand, there is no difference between the max diameters of these lenses, both coming at 78mm.
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 39g (7%) lighter than the Samyang 85mm F1.4 which has a weight of 539g.
Filter Threads
The Canon RF 85mm F2 Macro IS STM has a filter size of 67mm whereas the Samyang 85mm F1.4 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 67mm filters that we recommend you to consider for the Canon RF 85mm F2 Macro IS STM:
And these are the 72mm filters that we recommend for the Samyang 85mm F1.4:
Lens Mounts
The Canon RF 85mm F2 Macro IS STM has the Canon RF lens mount whereas the Samyang 85mm F1.4 has the Four Thirds lens mount. Some of the latest released cameras that are compatible with these mounts are Canon R100, Canon R8 and Canon R50 for the Canon RF Mount and Olympus E-5, Olympus E-600 and Olympus E-620 for the Four Thirds Mount.
Samyang 85mm F1.4 is also available in Canon EF , Nikon F (FX), Pentax KAF, Sony Alpha, Sony E and Samsung NX mounts.
Focal Range
Both lenses have the same focal range of
85mm but while Canon RF 85mm F2 Macro IS STM has the fastest aperture of
F2, the Samyang 85mm F1.4's widest aperture value is
F1.4.