The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Kamlan 28mm F1.4 and the Fujifilm 23mm F1.4 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. Kamlan 28mm F1.4 is the longer of the two lenses at 65mm. The Fujifilm 23mm F1.4 R with a length of 63mm, is 2mm shorter. On the other hand, the Fujifilm 23mm F1.4 R has a larger diameter of 72mm compared to the Kamlan 28mm F1.4's 55mm 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 23mm F1.4 R weighs 300g, 21% (84g) lighter than the Kamlan 28mm F1.4's weight of 384g.
Below you can find the dimension and weight table of the Wideangle Prime Lenses in Fujifilm X Mount for size comparison purposes.
Wideangle Lenses in Fujifilm X Mount for Size Comparison
Filter Threads
The Kamlan 28mm F1.4 has a filter size of 52mm whereas the Fujifilm 23mm F1.4 R has a 62mm diameter. Larger filters are generally more expensive than the smaller ones given all the other features are equal.
Below are links to the 52mm filters that we recommend you to consider for the Kamlan 28mm F1.4:
And these are the 62mm filters that we recommend for the Fujifilm 23mm F1.4 R:
Lens Mounts
Both the Kamlan 28mm F1.4 and the Fujifilm 23mm F1.4 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.
Kamlan 28mm F1.4 is also available in Canon EF-M , Micro Four Thirds and Sony E mounts.
Focal Range
Kamlan 28mm F1.4 is a prime lens with fixed focal lenght of 28mm which has an effective (full-frame 35mm equivalent) focal range of
42mm when used on a APS-C / DX format camera.
On the other hand, the Fujifilm 23mm F1.4 R is a prime lens with fixed focal lenght of 23mm which has an effective (full-frame 35mm equivalent) focal range of 34.5mm when used on a APS-C / DX format camera.