The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Rokinon 8mm f2.8 Fisheye and the Carl Zeiss Touit 2.8/12 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 Rokinon 8mm f2.8 Fisheye with a length of 77mm, is 9mm shorter. Besides being longer, the Carl Zeiss Touit 2.8/12 also has a larger diameter of 82mm compared to the Rokinon 8mm f2.8 Fisheye's 75mm 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 2.8/12 weighs 270g, 39% (173g) lighter than the Rokinon 8mm f2.8 Fisheye's weight of 443g.
Below you can find the dimension and weight table of the Wideangle Fisheye Prime Lenses in Fujifilm X Mount for size comparison purposes.
Ultra-Wideangle Lenses in Fujifilm X Mount for Size Comparison
Lens Mounts
Both the Rokinon 8mm f2.8 Fisheye and the Carl Zeiss Touit 2.8/12 has the same Fujifilm X lens mount. Some of the latest released cameras that are compatible with the Fujifilm X lenses are Fujifilm X-T30 III, Fujifilm X-E5 and Fujifilm X-M5.
Carl Zeiss Touit 2.8/12 is also available in Sony E mount.
Focal Range
Rokinon 8mm f2.8 Fisheye is a prime lens with fixed focal lenght of 8mm which has an effective (full-frame 35mm equivalent) focal range of
12mm when used on a APS-C / DX format camera.
On the other hand, the Carl Zeiss Touit 2.8/12 is a prime lens with fixed focal lenght of 12mm which has an effective (full-frame 35mm equivalent) focal range of 18mm when used on a APS-C / DX format camera.
