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 Nikon 85mm f1.8G 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 50mm F1.2 AS UMC CS is the longer of the two lenses at 74mm. The Nikon 85mm f1.8G with a length of 73mm, is 1mm shorter. On the other hand, the Nikon 85mm f1.8G has a larger diameter of 80mm compared to the Samyang 50mm F1.2 AS UMC CS 's 68mm diameter.
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. Nikon 85mm f1.8G weighs 350g, 6% (25g) lighter than the Samyang 50mm F1.2 AS UMC CS 's weight of 375g.
Filter Threads
The Samyang 50mm F1.2 AS UMC CS has a filter size of 62mm whereas the Nikon 85mm f1.8G 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 Nikon 85mm f1.8G:
Lens Mounts
The Samyang 50mm F1.2 AS UMC CS has the Micro Four Thirds lens mount whereas the Nikon 85mm f1.8G has the Nikon F (FX) lens mount. Some of the latest released cameras that are compatible with these mounts are OM System OM-3 Astro, OM System OM-5 II and OM System OM-3 for the Micro Four Thirds Mount and Nikon D6, Nikon D780 and Nikon D3500 for the Nikon F (FX) Mount.
Samyang 50mm F1.2 AS UMC CS is also available in the Canon EF-M , Fujifilm X and Sony E mounts.
Focal Range
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.
On the other hand, the Nikon 85mm f1.8G is a prime lens with fixed focal lenght of 85mm. When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of 127.5mm.
