The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Sony FE 14mm F1.8 GM and the Samyang MF 14mm F2.8 Mk2 for their suitability to various photography scenarios:
Size and Weight Comparison
The size of a lens is an important deciding factor when comparing two lenses. Sony FE 14mm F1.8 GM is the longer of the two lenses at 100mm. The Samyang MF 14mm F2.8 Mk2 with a length of 96mm, is 4mm shorter. On the other hand, the Samyang MF 14mm F2.8 Mk2 has a larger diameter of 87mm compared to the Sony FE 14mm F1.8 GM's 83mm diameter.
The 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. Sony FE 14mm F1.8 GM weighs 460g, which means it is 189g (29%) lighter than the Samyang MF 14mm F2.8 Mk2 which has a weight of 649g.
Below you can find the dimension and weight table of the Wideangle Prime Lenses in Sony E Mount for size comparison purposes.
Wideangle Prime Lenses in Sony E Mount for Size Comparison
Lens Mounts
Both the Sony FE 14mm F1.8 GM and the Samyang MF 14mm F2.8 Mk2 has the same Sony E lens mount. Some of the latest released cameras that are compatible with the Sony E lenses are Sony A7R V, Sony FX30 and Sony A7 IV.
Samyang MF 14mm F2.8 Mk2 is also available in Canon EF , Canon EF-M, Fujifilm X, Micro Four Thirds and Nikon F (FX) mounts.
Focal Range
Both lenses have the same focal range of 14mm but while Sony FE 14mm F1.8 GM has the fastest aperture of F1.8, the Samyang MF 14mm F2.8 Mk2's widest aperture value is F2.8.