The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Viltrox 135mm f1.8 FE and the Samyang 50mm F1.2 AS UMC CS 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. Viltrox 135mm f1.8 FE is the longer of the two lenses at 146mm. The Samyang 50mm F1.2 AS UMC CS with a length of 74mm, is 72mm shorter. Besides being longer, the Viltrox 135mm f1.8 FE also has a larger diameter of 93mm compared to the Samyang 50mm F1.2 AS UMC CS 's 68mm diameter.
Below you can find a scaled side-by-side image of Viltrox 135mm f1.8 FE and Samyang 50mm F1.2 AS UMC CS to get a better idea of how their sizes compare in real life.
Comparison image of the Viltrox 135mm f1.8 FE and the Samyang 50mm F1.2 AS UMC CS 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 50mm F1.2 AS UMC CS weighs 375g, 69% (860g) lighter than the Viltrox 135mm f1.8 FE's weight of 1235g.
Filter Threads
The Viltrox 135mm f1.8 FE has a filter size of 82mm whereas the Samyang 50mm F1.2 AS UMC CS has a 62mm 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 Viltrox 135mm f1.8 FE:
And these are the 62mm filters that we recommend for the Samyang 50mm F1.2 AS UMC CS :
Lens Mounts
The Viltrox 135mm f1.8 FE has the Sony E lens mount whereas the Samyang 50mm F1.2 AS UMC CS has the Micro Four Thirds lens mount . Some of the latest released cameras that are compatible with these mounts are Sony FX5 , Sony A7R VI and Sony A7 V for the Sony E Mount and OM System OM-3 Astro , OM System OM-5 II and OM System OM-3 for the Micro Four Thirds Mount.
Canon EF-M , Fujifilm X and Sony E mounts.
Focal Range
Viltrox 135mm f1.8 FE is a prime lens with fixed focal lenght of 135mm. When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of
202.5mm .
On the other hand, the Samyang 50mm F1.2 AS UMC CS is a prime lens with fixed focal lenght of 50mm which has an effective (full-frame 35mm equivalent) focal range of 100mm when used on a APS-C / DX format camera.
