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 Sony FE 100mm F2.8 STF GM 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. Sony FE 100mm F2.8 STF GM is the longer of the two lenses at 118mm. The Samyang MF 85mm F1.4 Mk2 with a length of 75mm, is 43mm shorter. Besides being longer, the Sony FE 100mm F2.8 STF GM also has a larger diameter of 85mm compared to the Samyang MF 85mm F1.4 Mk2'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. Samyang MF 85mm F1.4 Mk2 weighs 548g, which means it is 152g (21%) lighter than the Sony FE 100mm F2.8 STF GM which has a weight of 700g.
Below you can find the dimension and weight table of the Telephoto Prime Lenses in Sony E Mount for size comparison purposes.
Telephoto Lenses in Sony E Mount for Size Comparison
Filter Threads
Both the Samyang MF 85mm F1.4 Mk2 and the Sony FE 100mm F2.8 STF GM 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 Samyang MF 85mm F1.4 Mk2 and the Sony FE 100mm F2.8 STF GM has the same Sony E lens mount. Some of the latest released cameras that are compatible with the Sony E lenses are Sony FX5, Sony A7R VI and Sony A7 V.
Samyang MF 85mm F1.4 Mk2 is also available in the Canon EF , Canon EF-M, Fujifilm X, Micro Four Thirds and Nikon F (FX) mounts.
Focal Range
Samyang MF 85mm F1.4 Mk2 is a prime lens with fixed focal lenght of 85mm. When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of
127.5mm.
On the other hand, the Sony FE 100mm F2.8 STF GM is a prime lens with fixed focal lenght of 100mm. When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of 150mm.
