The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Samyang AF 75mm F1.8 FE and the Carl Zeiss Sonnar T2/85 ZM 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. Carl Zeiss Sonnar T2/85 ZM is the longer of the two lenses at 100mm. The Samyang AF 75mm F1.8 FE with a length of 69mm, is 31mm shorter. Besides being longer, the Carl Zeiss Sonnar T2/85 ZM also has a larger diameter of 70mm compared to the Samyang AF 75mm F1.8 FE's 65mm 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. Samyang AF 75mm F1.8 FE weighs 230g, which means it is 270g (54%) lighter than the Carl Zeiss Sonnar T2/85 ZM which has a weight of 500g.
Filter Threads
Both the Samyang AF 75mm F1.8 FE and the Carl Zeiss Sonnar T2/85 ZM have the same Filter thread size of 58mm.
Below are links to the 58mm filters that we recommend you to consider for these lenses:
Lens Mounts
The Samyang AF 75mm F1.8 FE has the Sony E lens mount whereas the Carl Zeiss Sonnar T2/85 ZM has the Leica M 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 Leica M EV1, Leica M11-D and Pixii Max for the Leica M Mount.
Focal Range
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.
On the other hand, the Carl Zeiss Sonnar T2/85 ZM is a prime lens with fixed focal lenght of 85mm.
