The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Fujifilm 14mm F2.8 R and the Carl Zeiss C Biogon T4,5/21 ZM 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 14mm F2.8 R is the longer of the two lenses at 58mm. The Carl Zeiss C Biogon T4,5/21 ZM with a length of 56mm, is 2mm shorter. Besides being longer, the Fujifilm 14mm F2.8 R also has a larger diameter of 65mm compared to the Carl Zeiss C Biogon T4,5/21 ZM's 53mm 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 C Biogon T4,5/21 ZM weighs 210g, 10% (25g) lighter than the Fujifilm 14mm F2.8 R's weight of 235g.
Filter Threads
The Fujifilm 14mm F2.8 R has a filter size of 58mm whereas the Carl Zeiss C Biogon T4,5/21 ZM has a 46mm diameter. Larger filters are generally more expensive than the smaller ones given all the other features are equal.
Below are links to the 58mm filters that we recommend you to consider for the Fujifilm 14mm F2.8 R:
And these are the 46mm filters that we recommend for the Carl Zeiss C Biogon T4,5/21 ZM:
Lens Mounts
The Fujifilm 14mm F2.8 R has the Fujifilm X lens mount whereas the Carl Zeiss C Biogon T4,5/21 ZM has the Leica M lens mount. Some of the latest released cameras that are compatible with these mounts are Fujifilm X-T30 III, Fujifilm X-E5 and Fujifilm X-M5 for the Fujifilm X Mount and Leica M EV1, Leica M11-D and Pixii Max for the Leica M Mount.
Focal Range
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.
On the other hand, the Carl Zeiss C Biogon T4,5/21 ZM is a prime lens with fixed focal lenght of 21mm.
