The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Sigma 135mm F1.8 DG HSM and the Samyang AF 135mm F1.8 FE 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. Sigma 135mm F1.8 DG HSM is the longer of the two lenses at 141mm. The Samyang AF 135mm F1.8 FE with a length of 130mm, is 11mm shorter. On the other hand, the Samyang AF 135mm F1.8 FE has a larger diameter of 93mm compared to the Sigma 135mm F1.8 DG HSM's 91mm diameter.
Below you can find a scaled side-by-side image of Sigma 135mm F1.8 DG HSM and Samyang AF 135mm F1.8 FE to get a better idea of how their sizes compare in real life.
Comparison image of the Sigma 135mm F1.8 DG HSM and the Samyang AF 135mm F1.8 FE Size and Weight 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. Samyang AF 135mm F1.8 FE weighs 772g, 31% (358g) lighter than the Sigma 135mm F1.8 DG HSM's weight of 1130g.
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
Lens Mounts
Both the Sigma 135mm F1.8 DG HSM and the Samyang AF 135mm F1.8 FE has the same Sony E lens mount. Some of the latest released cameras that are compatible with the Sony E lenses are Sony ZV-E1, Sony A7R V and Sony FX30.
Sigma 135mm F1.8 DG HSM is also available in Sigma SA , Nikon F (FX) and Canon EF mounts.
Focal Range
Both lenses have the same focal range of 135mm and the fastest aperture of F1.8.