The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Sony FE 50-150mm F2 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. Sony FE 50-150mm F2 is the longer of the two lenses at 200mm. The Samyang 135mm F2.0 ED UMC with a length of 122mm, is 78mm shorter. Besides being longer, the Sony FE 50-150mm F2 also has a larger diameter of 103mm compared to the Samyang 135mm F2.0 ED UMC's 82mm diameter.
Below you can find a scaled side-by-side image of Sony FE 50-150mm F2 and Samyang 135mm F2.0 ED UMC to get a better idea of how their sizes compare in real life.
Comparison image of the Sony FE 50-150mm F2 and the Samyang 135mm F2.0 ED UMC Size and Weight 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 135mm F2.0 ED UMC weighs 830g, 38% (510g) lighter than the Sony FE 50-150mm F2's weight of 1340g.
Filter Threads
The Sony FE 50-150mm F2 has a filter size of 95mm 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 95mm filters that we recommend you to consider for the Sony FE 50-150mm F2:
And these are the 77mm filters that we recommend for the Samyang 135mm F2.0 ED UMC:
Lens Mounts
Both the Sony FE 50-150mm F2 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 FX5 , Sony A7R VI and Sony A7 V .
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
Sony FE 50-150mm F2 has a focal range of 50-150mm and
3.0X zoom ratio . When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of
75 - 225mm .
On the other hand, the Samyang 135mm F2.0 ED UMC is a prime lens with fixed focal lenght of 135mm.