The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Samyang MF 85mm F1.4 Mk2 and the Rokinon 85mm F1.8 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. Rokinon 85mm F1.8 is the longer of the two lenses at 81mm. The Samyang MF 85mm F1.4 Mk2 with a length of 75mm, is 6mm shorter. On the other hand, the Samyang MF 85mm F1.4 Mk2 has a larger diameter of 78mm compared to the Rokinon 85mm F1.8's 68mm diameter.
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. Rokinon 85mm F1.8 weighs 344g, 37% (204g) lighter than the Samyang MF 85mm F1.4 Mk2's weight of 548g.
Below you can find the dimension and weight table of the Telephoto Prime Lenses in Canon EF-M Mount for size comparison purposes.
Telephoto Lenses in Canon EF-M Mount for Size Comparison
Filter Threads
The Samyang MF 85mm F1.4 Mk2 has a filter size of 72mm whereas the Rokinon 85mm F1.8 has a 62mm diameter. Larger filters are generally more expensive than the smaller ones given all the other features are equal.
Below are links to the 72mm filters that we recommend you to consider for the Samyang MF 85mm F1.4 Mk2:
And these are the 62mm filters that we recommend for the Rokinon 85mm F1.8:
Lens Mounts
Both the Samyang MF 85mm F1.4 Mk2 and the Rokinon 85mm F1.8 has the same Canon EF-M lens mount. Some of the latest released cameras that are compatible with the Canon EF-M lenses are Canon M50 II, Canon M200 and Canon M6 MII.
Samyang MF 85mm F1.4 Mk2 is also available in Canon EF , Fujifilm X, Micro Four Thirds, Nikon F (FX) and Sony E mounts.
Rokinon 85mm F1.8 is also available in Fujifilm X and Sony E mounts.
Focal Range
Both lenses have the same focal range of
85mm but while Samyang MF 85mm F1.4 Mk2 has the fastest aperture of
F1.4, the Rokinon 85mm F1.8's widest aperture value is
F1.8.