The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Rokinon 85mm F1.4 and the Canon 85mm f1.2L II USM 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 85mm f1.2L II USM is the longer of the two lenses at 84mm. The Rokinon 85mm F1.4 with a length of 75mm, is 9mm shorter. Besides being longer, the Canon 85mm f1.2L II USM also has a larger diameter of 92mm compared to the Rokinon 85mm F1.4's 78mm 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 F1.4 weighs 539g, which means it is 486g (47%) lighter than the Canon 85mm f1.2L II USM which has a weight of 1025g.
Below you can find the dimension and weight table of the Telephoto Prime Lenses in Canon EF Mount for size comparison purposes.
Telephoto Lenses in Canon EF Mount for Size Comparison
Filter Threads
Both the Rokinon 85mm F1.4 and the Canon 85mm f1.2L II USM have the same Filter thread size of 72mm.
Below are links to the 72mm filters that we recommend you to consider for these lenses:
Lens Mounts
Both the Rokinon 85mm F1.4 and the Canon 85mm f1.2L II USM has the same Canon EF lens mount. Some of the latest released cameras that are compatible with the Canon EF lenses are Canon 1D X III, Canon 6D MII and Canon 5D MIV.
Rokinon 85mm F1.4 is also available in Four Thirds , Pentax KAF, Sony Alpha, Samsung NX and Nikon F (FX) mounts.
Focal Range
Both lenses have the same focal range of
85mm but while Rokinon 85mm F1.4 has the fastest aperture of
F1.4, the Canon 85mm f1.2L II USM's widest aperture value is
F1.2.