The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Viltrox 15mm F1.7 X and the Fujifilm 23mm F2.8 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. Viltrox 15mm F1.7 X is the longer of the two lenses at 56mm. The Fujifilm 23mm F2.8 with a length of 23mm, is 33mm shorter. Besides being longer, the Viltrox 15mm F1.7 X also has a larger diameter of 65mm compared to the Fujifilm 23mm F2.8's 62mm diameter.
Below you can find a scaled side-by-side image of Viltrox 15mm F1.7 X and Fujifilm 23mm F2.8 to get a better idea of how their sizes compare in real life.
Comparison image of the Viltrox 15mm F1.7 X and the Fujifilm 23mm F2.8 Size and Weight 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 F2.8 weighs 90g, 50% (90g) lighter than the Viltrox 15mm F1.7 X's weight of 180g.
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 Viltrox 15mm F1.7 X has a filter size of 58mm whereas the Fujifilm 23mm F2.8 has a 39mm 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 Viltrox 15mm F1.7 X:
And these are the 39mm filters that we recommend for the Fujifilm 23mm F2.8:
Lens Mounts
Both the Viltrox 15mm F1.7 X and the Fujifilm 23mm F2.8 has the same Fujifilm X lens mount . Some of the latest released cameras that are compatible with the Fujifilm X lenses are Fujifilm X-T30 III , Fujifilm X-E5 and Fujifilm X-M5 .
Focal Range
Viltrox 15mm F1.7 X is a prime lens with fixed focal lenght of 15mm which has an effective (full-frame 35mm equivalent) focal range of
22.5mm when used on a APS-C / DX format camera.
On the other hand, the Fujifilm 23mm F2.8 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.