The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Samyang AF 135mm F1.8 FE and the Sony FE 135mm F1.8 GM for their suitability to various photography scenarios:
Size and Weight Comparison
Size of a lens is an important deciding factor when comparing two lenses.Samyang AF 135mm F1.8 FE is the longer of the two lenses at 130mm. The Sony FE 135mm F1.8 GM with a length of 127mm is 3mm shorter. Besides being longer, the Samyang AF 135mm F1.8 FE also has a larger diameter of 93mm compared to Sony FE 135mm F1.8 GM's 90mm diameter.
Below you can find the scaled side by side image of Samyang AF 135mm F1.8 FE and Sony FE 135mm F1.8 GM to get a better idea of how their size compare in real life.
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. Samyang AF 135mm F1.8 FE weighs 772g, which means it is 178g (18%) lighter than the Sony FE 135mm F1.8 GM which has a weight of 950g.
Below you can find the dimension and weight table of the 'Telephoto Prime Lenses in Sony E Mount for size comparison purposes.
Telephoto Prime Lenses in Sony E Mount for Size Comparison
Both Samyang AF 135mm F1.8 FE and Sony FE 135mm F1.8 GM 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.
Both lenses have the same focal range of 135mm and the fastest aperture of F1.8.