The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Carl Zeiss Touit 2.8/12 and the Samyang 12mm f2.0 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 Touit 2.8/12 is the longer of the two lenses at 86mm. The Samyang 12mm f2.0 with a length of 59mm, is 27mm shorter. Besides being longer, the Carl Zeiss Touit 2.8/12 also has a larger diameter of 82mm compared to the Samyang 12mm f2.0's 73mm 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 12mm f2.0 weighs 260g, 3% (10g) lighter than the Carl Zeiss Touit 2.8/12's weight of 270g.
Below you can find the dimension and weight table of the Wideangle Prime Lenses in Fujifilm X Mount for size comparison purposes.
Ultra-Wideangle Lenses in Fujifilm X Mount for Size Comparison
Filter Threads
Both the Carl Zeiss Touit 2.8/12 and the Samyang 12mm f2.0 have the same Filter thread size of 67mm.
Below are links to the 67mm filters that we recommend you to consider for these lenses:
Lens Mounts
Both the Carl Zeiss Touit 2.8/12 and the Samyang 12mm f2.0 has the same Fujifilm X lens mount. Some of the latest released cameras that are compatible with the Fujifilm X lenses are Fujifilm X-S20, Fujifilm X-T5 and Fujifilm X-H2.
Carl Zeiss Touit 2.8/12 is also available in Sony E mount.
Samyang 12mm f2.0 is also available in Canon EF-M , Micro Four Thirds, Sony E and Samsung NX mounts.
Focal Range
Both lenses have the same focal range of
12mm but while Carl Zeiss Touit 2.8/12 has the fastest aperture of
F2.8, the Samyang 12mm f2.0's widest aperture value is
F2.0.