The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Samyang 50mm F1.4 AS UMC and the Sigma 50mm F1.4 EX DG HSM 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 50mm F1.4 AS UMC is the longer of the two lenses at 75mm. The Sigma 50mm F1.4 EX DG HSM with a length of 68mm, is 7mm shorter. On the other hand, the Sigma 50mm F1.4 EX DG HSM has a larger diameter of 85mm compared to the Samyang 50mm F1.4 AS 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. Sigma 50mm F1.4 EX DG HSM weighs 505g, 5% (30g) lighter than the Samyang 50mm F1.4 AS UMC's weight of 535g.
Filter Threads
Both the Samyang 50mm F1.4 AS UMC and the Sigma 50mm F1.4 EX DG HSM 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 Samyang 50mm F1.4 AS UMC has the Pentax KAF lens mount whereas the Sigma 50mm F1.4 EX DG HSM has the Pentax KAF3 lens mount. Some of the latest released cameras that are compatible with these mounts are Pentax K-3 III Mono, Pentax KF and Pentax K-3 III for the Pentax KAF Mount and , and for the Pentax KAF3 Mount.
Samyang 50mm F1.4 AS UMC is also available in the Canon EF , Nikon F (FX), Sony Alpha and Sony E mounts.
Sigma 50mm F1.4 EX DG HSM is also available in Canon EF , Sony Alpha, Sigma SA, Nikon F (FX) and Four Thirds mounts.
Focal Range
Both lenses have the same focal range of
50mm and the fastest aperture of
F1.4.
