The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Samyang 12mm f2.0 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. Samyang 12mm f2.0 is the longer of the two lenses at 59mm. The Fujifilm 14mm F2.8 R with a length of 58mm, is 1mm shorter. Besides being longer, the Samyang 12mm f2.0 also has a larger diameter of 73mm 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, 9% (25g) lighter than the Samyang 12mm f2.0's weight of 260g.
Filter Threads
The Samyang 12mm f2.0 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 Samyang 12mm f2.0:
And these are the 58mm filters that we recommend for the Fujifilm 14mm F2.8 R:
Lens Mounts
Both the Samyang 12mm f2.0 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.
Samyang 12mm f2.0 is also available in Canon EF-M , Micro Four Thirds, Sony E and Samsung NX mounts.
Focal Range
Samyang 12mm f2.0 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.