The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Samyang 85mm F1.8 ED UMC CS and the Samyang AF 75mm F1.8 FE 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 85mm F1.8 ED UMC CS is the longer of the two lenses at 81mm. The Samyang AF 75mm F1.8 FE with a length of 69mm, is 12mm shorter. Besides being longer, the Samyang 85mm F1.8 ED UMC CS also has a larger diameter of 68mm compared to the Samyang AF 75mm F1.8 FE's 65mm diameter.
Below you can find a scaled side-by-side image of Samyang 85mm F1.8 ED UMC CS and Samyang AF 75mm F1.8 FE to get a better idea of how their sizes compare in real life.
Comparison image of the Samyang 85mm F1.8 ED UMC CS and the Samyang AF 75mm F1.8 FE 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 AF 75mm F1.8 FE weighs 230g, 33% (114g) lighter than the Samyang 85mm F1.8 ED UMC CS's weight of 344g.
Filter Threads
The Samyang 85mm F1.8 ED UMC CS has a filter size of 62mm whereas the Samyang AF 75mm F1.8 FE has a 58mm 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 85mm F1.8 ED UMC CS:
And these are the 58mm filters that we recommend for the Samyang AF 75mm F1.8 FE:
Lens Mounts
The Samyang 85mm F1.8 ED UMC CS has the Canon EF-M lens mount whereas the Samyang AF 75mm F1.8 FE has the Sony E lens mount . Some of the latest released cameras that are compatible with these mounts are Canon M50 II , Canon M200 and Canon M6 MII for the Canon EF-M Mount and Sony FX5 , Sony A7R VI and Sony A7 V for the Sony E Mount.
Fujifilm X and Sony E mounts.
Focal Range
Samyang 85mm F1.8 ED UMC CS is a prime lens with fixed focal lenght of 85mm which has an effective (full-frame 35mm equivalent) focal range of
136mm when used on a APS-C / DX format camera.
On the other hand, the Samyang AF 75mm F1.8 FE is a prime lens with fixed focal lenght of 75mm. When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of 112.5mm .
