The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Samyang 135mm F2.0 ED UMC and the Sony FE 70-200mm F4 G OSS II 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 70-200mm F4 G OSS II is the longer of the two lenses at 149mm. The Samyang 135mm F2.0 ED UMC with a length of 122mm, is 27mm shorter. On the other hand, there is no difference between the max diameters of these lenses, both coming at 82mm.
Below you can find a scaled side-by-side image of Samyang 135mm F2.0 ED UMC and Sony FE 70-200mm F4 G OSS II to get a better idea of how their sizes compare in real life.
Comparison image of the Samyang 135mm F2.0 ED UMC and the Sony FE 70-200mm F4 G OSS II 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. Sony FE 70-200mm F4 G OSS II weighs 794g, 4% (36g) lighter than the Samyang 135mm F2.0 ED UMC's weight of 830g.
Filter Threads
The Samyang 135mm F2.0 ED UMC has a filter size of 77mm whereas the Sony FE 70-200mm F4 G OSS II has a 72mm diameter. Larger filters are generally more expensive than the smaller ones given all the other features are equal.
Below are links to the 77mm filters that we recommend you to consider for the Samyang 135mm F2.0 ED UMC:
And these are the 72mm filters that we recommend for the Sony FE 70-200mm F4 G OSS II:
Lens Mounts
Both the Samyang 135mm F2.0 ED UMC and the Sony FE 70-200mm F4 G OSS II 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 the 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
Samyang 135mm F2.0 ED UMC is a prime lens with fixed focal lenght of 135mm.
On the other hand, the Sony FE 70-200mm F4 G OSS II has a focal range of 70-200mm and 2.9X zoom ratio . When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of 105 - 300mm .