The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Viltrox 75mm f1.2 AF and the Samyang 135mm F2.0 ED UMC 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. Samyang 135mm F2.0 ED UMC is the longer of the two lenses at 122mm. The Viltrox 75mm f1.2 AF with a length of 101mm, is 21mm shorter. On the other hand, the Viltrox 75mm f1.2 AF has a larger diameter of 87mm compared to the Samyang 135mm F2.0 ED UMC's 82mm 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. Viltrox 75mm f1.2 AF weighs 670g, which means it is 160g (19%) lighter than the Samyang 135mm F2.0 ED UMC which has a weight of 830g.
Filter Threads
Both the Viltrox 75mm f1.2 AF and the Samyang 135mm F2.0 ED UMC have the same Filter thread size of 77mm.
Below are links to the 77mm filters that we recommend you to consider for these lenses:
Lens Mounts
The Viltrox 75mm f1.2 AF has the Nikon Z lens mount whereas the Samyang 135mm F2.0 ED UMC has the Nikon F (FX) lens mount. Some of the latest released cameras that are compatible with these mounts are RED Komodo-X 6K Z, Nikon Z50 II and Nikon Z30 for the Nikon Z Mount and Nikon D6, Nikon D780 and Nikon D3500 for the Nikon F (FX) Mount.
Viltrox 75mm f1.2 AF is also available in the Sony E and Fujifilm X mounts.
Samyang 135mm F2.0 ED UMC is also available in Canon EF , Canon EF-M, Four Thirds, Fujifilm X, Micro Four Thirds, Pentax KAF, Samsung NX, Sony Alpha and Sony E mounts.
Focal Range
Viltrox 75mm f1.2 AF is a prime lens with fixed focal lenght of 75mm which has an effective (full-frame 35mm equivalent) focal range of
112.5mm when used on a APS-C / DX format camera.
On the other hand, the Samyang 135mm F2.0 ED UMC is a prime lens with fixed focal lenght of 135mm. When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of 202.5mm.
