The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Samyang AF 135mm F1.8 FE and the Samyang 135mm F2.0 ED 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. Samyang AF 135mm F1.8 FE is the longer of the two lenses at 130mm. The Samyang 135mm F2.0 ED UMC with a length of 122mm, is 8mm shorter. Besides being longer, the Samyang AF 135mm F1.8 FE also has a larger diameter of 93mm compared to the Samyang 135mm F2.0 ED UMC's 82mm diameter.
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Below you can find a scaled side-by-side image of Samyang AF 135mm F1.8 FE and Samyang 135mm F2.0 ED 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. Samyang AF 135mm F1.8 FE weighs 772g, which means it is 58g (6%) lighter than the Samyang 135mm F2.0 ED UMC which has a weight of 830g.
Below you can find the dimension and weight table of the Telephoto Prime Lenses in Sony E Mount for size comparison purposes.
Telephoto Lenses in Sony E Mount for Size Comparison
Filter Threads
The Samyang AF 135mm F1.8 FE has a filter size of 82mm whereas the Samyang 135mm F2.0 ED 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 82mm filters that we recommend you to consider for the Samyang AF 135mm F1.8 FE:
And these are the 77mm filters that we recommend for the Samyang 135mm F2.0 ED UMC:
Lens Mounts
Both the Samyang AF 135mm F1.8 FE and the Samyang 135mm F2.0 ED 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 135mm F2.0 ED UMC is also available in Canon EF , Canon EF-M, Four Thirds, Fujifilm X, Micro Four Thirds, Nikon F (FX), Pentax KAF, Samsung NX and Sony Alpha mounts.
Focal Range
Both lenses have the same focal range of
135mm but while Samyang AF 135mm F1.8 FE has the fastest aperture of
F1.8, the Samyang 135mm F2.0 ED UMC's widest aperture value is
F2.