The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Tokina atx-m 56mm F1.4 X and the Rokinon 85mm F1.8 for their suitability to various photography scenarios:
Size and Weight Comparison
Size of a lens is an important deciding factor when comparing two lenses.Rokinon 85mm F1.8 is the longer of the two lenses at 81mm. The Tokina atx-m 56mm F1.4 X with a length of 72mm is 9mm shorter. Besides being longer, the Rokinon 85mm F1.8 also has a larger diameter of 68mm compared to Tokina atx-m 56mm F1.4 X's 65mm diameter.
Weight of a lens is as important as its external dimensions, especially if you are planning to hand hold your camera and lens combination for longer periods. Tokina atx-m 56mm F1.4 X weighs 315g, which means it is 29g (8%) lighter than the Rokinon 85mm F1.8 which has a weight of 344g.
Below you can find the dimension and weight table of the 'Telephoto Prime Lenses in Fujifilm X Mount for size comparison purposes.
Telephoto Prime Lenses in Fujifilm X Mount for Size Comparison
Both Tokina atx-m 56mm F1.4 X and Rokinon 85mm F1.8 has the same Fujifilm X lens mount. Some of the latest released cameras that are compatible with the Fujifilm X lenses are Fujifilm X-T5, Fujifilm X-H2 and Fujifilm X-H2S.
Rokinon 85mm F1.8 is also available in Canon EF-M and Sony E mounts.
Tokina atx-m 56mm F1.4 X is a prime lens with fixed focal lenght of 56mm which has an effective (full-frame 35mm equivalent) focal range of 84mm when used on a APS-C / DX format camera. Rokinon 85mm F1.8 is a prime lens with fixed focal lenght of 85mm which has an effective (full-frame 35mm equivalent) focal range of 127.5mm when used on a APS-C / DX format camera.