The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Carl Zeiss Touit 1.8/32 and the Samyang 35mm F1.2 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 35mm F1.2 is the longer of the two lenses at 74mm. The Carl Zeiss Touit 1.8/32 with a length of 60mm, is 14mm shorter. Besides being longer, the Samyang 35mm F1.2 also has a larger diameter of 68mm compared to the Carl Zeiss Touit 1.8/32'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. Carl Zeiss Touit 1.8/32 weighs 210g, which means it is 210g (50%) lighter than the Samyang 35mm F1.2 which has a weight of 420g.
Filter Threads
The Carl Zeiss Touit 1.8/32 has a filter size of 52mm whereas the Samyang 35mm F1.2 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 52mm filters that we recommend you to consider for the Carl Zeiss Touit 1.8/32:
And these are the 62mm filters that we recommend for the Samyang 35mm F1.2:
Lens Mounts
Both the Carl Zeiss Touit 1.8/32 and the Samyang 35mm F1.2 has the same Sony E lens mount. Some of the latest released cameras that are compatible with the Sony E lenses are Sony A6700, Sony FX30 and Sony ZV-E10.
Carl Zeiss Touit 1.8/32 is also available in Fujifilm X mount.
Samyang 35mm F1.2 is also available in Canon EF-M , Fujifilm X and Micro Four Thirds mounts.
Focal Range
Carl Zeiss Touit 1.8/32 is a prime lens with fixed focal lenght of 32mm which has an effective (full-frame 35mm equivalent) focal range of
48mm when used on a APS-C / DX format camera.
On the other hand, the Samyang 35mm F1.2 is a prime lens with fixed focal lenght of 35mm which has an effective (full-frame 35mm equivalent) focal range of 52.5mm when used on a APS-C / DX format camera.