The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Sony FE 50mm F1.4 GM and the Samyang 50mm F1.4 AS UMC 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. Sony FE 50mm F1.4 GM is the longer of the two lenses at 96mm. The Samyang 50mm F1.4 AS UMC with a length of 75mm, is 21mm shorter. On the other hand, the Samyang 50mm F1.4 AS UMC has a larger diameter of 82mm compared to the Sony FE 50mm F1.4 GM's 81mm diameter.
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Below you can find a scaled side-by-side image of Sony FE 50mm F1.4 GM and Samyang 50mm F1.4 AS UMC to get a better idea of how their sizes compare in real life.
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. Sony FE 50mm F1.4 GM weighs 516g, which means it is 19g (3%) lighter than the Samyang 50mm F1.4 AS UMC which has a weight of 535g.
Below you can find the dimension and weight table of the Standard Prime Lenses in Sony E Mount for size comparison purposes.
Standard Lenses in Sony E Mount for Size Comparison
Filter Threads
The Sony FE 50mm F1.4 GM has a filter size of 67mm whereas the Samyang 50mm F1.4 AS UMC has a 77mm diameter. Larger filters are generally more expensive than the smaller ones given all the other features are equal.
Below are links to the 67mm filters that we recommend you to consider for the Sony FE 50mm F1.4 GM:
And these are the 77mm filters that we recommend for the Samyang 50mm F1.4 AS UMC:
Lens Mounts
Both the Sony FE 50mm F1.4 GM and the Samyang 50mm F1.4 AS UMC has the same Sony E lens mount. Some of the latest released cameras that are compatible with the Sony E lenses are Sony A9 III, Sony A7C Mark II and Sony A7CR.
Samyang 50mm F1.4 AS UMC is also available in Canon EF , Nikon F (FX), Pentax KAF and Sony Alpha mounts.
Focal Range
Both lenses have the same focal range of
50mm and the fastest aperture of
F1.4.