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 Sony Zeiss FE 50mm F1.4 ZA 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 Zeiss FE 50mm F1.4 ZA is the longer of the two lenses at 108mm. The Samyang 50mm F1.4 AS UMC with a length of 75mm, is 33mm shorter. Besides being longer, the Sony Zeiss FE 50mm F1.4 ZA also has a larger diameter of 84mm compared to the Samyang 50mm F1.4 AS UMC's 82mm diameter.
Below you can find a scaled side-by-side image of Samyang 50mm F1.4 AS UMC and Sony Zeiss FE 50mm F1.4 ZA to get a better idea of how their sizes compare in real life.
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 50mm F1.4 AS UMC weighs 535g, which means it is 243g (31%) lighter than the Sony Zeiss FE 50mm F1.4 ZA which has a weight of 778g.
Below you can find the dimension and weight table of the Standard Prime Lenses in Sony E Mount for size comparison purposes.
Standard Prime Lenses in Sony E Mount for Size Comparison
Both the Samyang 50mm F1.4 AS UMC and the Sony Zeiss FE 50mm F1.4 ZA 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 50mm F1.4 AS UMC is also available in Canon EF , Nikon F (FX), Pentax KAF and Sony Alpha mounts.
Both lenses have the same focal range of 50mm and the fastest aperture of F1.4.