The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Fujifilm GF 23mm F4 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. Fujifilm GF 23mm F4 is the longer of the two lenses at 103mm. The Carl Zeiss Touit 2.8/12 with a length of 86mm, is 17mm shorter. Besides being longer, the Fujifilm GF 23mm F4 also has a larger diameter of 90mm compared to the Carl Zeiss Touit 2.8/12's 82mm 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, 68% (575g) lighter than the Fujifilm GF 23mm F4's weight of 845g.
Filter Threads
The Fujifilm GF 23mm F4 has a filter size of 82mm whereas the Carl Zeiss Touit 2.8/12 has a 67mm diameter. Larger filters are generally more expensive than the smaller ones given all the other features are equal.
Below are links to the 82mm filters that we recommend you to consider for the Fujifilm GF 23mm F4:
And these are the 67mm filters that we recommend for the Carl Zeiss Touit 2.8/12:
Lens Mounts
The Fujifilm GF 23mm F4 has the Fujifilm G lens mount whereas the Carl Zeiss Touit 2.8/12 has the Fujifilm X lens mount. Some of the latest released cameras that are compatible with these mounts are Fujifilm GFX Eterna 55, Fujifilm GFX 100S II and Fujifilm GFX 100 II for the Fujifilm G Mount and Fujifilm X-T30 III, Fujifilm X-E5 and Fujifilm X-M5 for the Fujifilm X Mount.
Carl Zeiss Touit 2.8/12 is also available in Sony E mount.
Focal Range
Fujifilm GF 23mm F4 is a prime lens with fixed focal lenght of 23mm.
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.
