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 Fujifilm 14mm F2.8 R 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 Fujifilm 14mm F2.8 R with a length of 58mm, is 28mm shorter. Besides being longer, the Carl Zeiss Touit 2.8/12 also has a larger diameter of 82mm compared to the Fujifilm 14mm F2.8 R'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. Fujifilm 14mm F2.8 R weighs 235g, 12% (35g) lighter than the Carl Zeiss Touit 2.8/12's weight of 270g.
Filter Threads
The Carl Zeiss Touit 2.8/12 has a filter size of 67mm whereas the Fujifilm 14mm F2.8 R 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 67mm filters that we recommend you to consider for the Carl Zeiss Touit 2.8/12:
And these are the 58mm filters that we recommend for the Fujifilm 14mm F2.8 R:
Lens Mounts
Both the Carl Zeiss Touit 2.8/12 and the Fujifilm 14mm F2.8 R 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.
Focal Range
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.
On the other hand, the Fujifilm 14mm F2.8 R is a prime lens with fixed focal lenght of 14mm which has an effective (full-frame 35mm equivalent) focal range of 21mm when used on a APS-C / DX format camera.