The type of photography that you are planning to use is an important decision factor. Here we have evaluated the SG-image 25mm F1.8 and the Fujifilm 23mm F2 WR 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 23mm F2 WR is the longer of the two lenses at 52mm. The SG-image 25mm F1.8 with a length of 32mm, is 20mm shorter. On the other hand, the SG-image 25mm F1.8 has a larger diameter of 67mm compared to the Fujifilm 23mm F2 WR's 60mm 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. SG-image 25mm F1.8 weighs 145g, which means it is 35g (19%) lighter than the Fujifilm 23mm F2 WR which has a weight of 180g.
Filter Threads
The SG-image 25mm F1.8 has a filter size of 52mm whereas the Fujifilm 23mm F2 WR has a 43mm 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 SG-image 25mm F1.8:
And these are the 43mm filters that we recommend for the Fujifilm 23mm F2 WR:
Lens Mounts
The SG-image 25mm F1.8 has the Nikon Z lens mount whereas the Fujifilm 23mm F2 WR has the Fujifilm X lens mount. Some of the latest released cameras that are compatible with these mounts are RED Komodo-X 6K Z, Nikon Z50 II and Nikon Z30 for the Nikon Z Mount and Fujifilm X-T30 III, Fujifilm X-E5 and Fujifilm X-M5 for the Fujifilm X Mount.
SG-image 25mm F1.8 is also available in the Sony E and Fujifilm X mounts.
Focal Range
SG-image 25mm F1.8 is a prime lens with fixed focal lenght of 25mm which has an effective (full-frame 35mm equivalent) focal range of
37.5mm when used on a APS-C / DX format camera.
On the other hand, the Fujifilm 23mm F2 WR 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.