The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Samyang 50mm F1.2 AS UMC CS and the Samyang AF 50mm F1.4 FE 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 AF 50mm F1.4 FE is the longer of the two lenses at 98mm. The Samyang 50mm F1.2 AS UMC CS with a length of 74mm, is 24mm shorter. Besides being longer, the Samyang AF 50mm F1.4 FE also has a larger diameter of 74mm compared to the Samyang 50mm F1.2 AS UMC CS's 68mm diameter.
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Below you can find a scaled side-by-side image of Samyang 50mm F1.2 AS UMC CS and Samyang AF 50mm F1.4 FE 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. Samyang 50mm F1.2 AS UMC CS weighs 375g, which means it is 210g (35%) lighter than the Samyang AF 50mm F1.4 FE which has a weight of 585g.
Filter Threads
The Samyang 50mm F1.2 AS UMC CS has a filter size of 62mm whereas the Samyang AF 50mm F1.4 FE has a 67mm diameter. Larger filters are generally more expensive than the smaller ones given all the other features are equal.
Below are links to the 62mm filters that we recommend you to consider for the Samyang 50mm F1.2 AS UMC CS:
And these are the 67mm filters that we recommend for the Samyang AF 50mm F1.4 FE:
Lens Mounts
Both the Samyang 50mm F1.2 AS UMC CS and the Samyang AF 50mm F1.4 FE has the same Sony E lens mount. Some of the latest released cameras that are compatible with the Sony E lenses are Sony A6700, Sony FX30 and Sony ZV-E10.
Samyang 50mm F1.2 AS UMC CS is also available in Canon EF-M , Fujifilm X and Micro Four Thirds mounts.
Focal Range
Both lenses have the same focal range of
50mm but while Samyang 50mm F1.2 AS UMC CS has the fastest aperture of
F1.2, the Samyang AF 50mm F1.4 FE's widest aperture value is
F1.4.