The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Viltrox 9mm F2.8 X and the Fujifilm XF 8mm F3.5 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. Viltrox 9mm F2.8 X is the longer of the two lenses at 56mm. The Fujifilm XF 8mm F3.5 WR with a length of 53mm, is 3mm shorter. On the other hand, the Fujifilm XF 8mm F3.5 WR has a larger diameter of 68mm compared to the Viltrox 9mm F2.8 X'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. Viltrox 9mm F2.8 X weighs 175g, which means it is 40g (18%) lighter than the Fujifilm XF 8mm F3.5 WR which has a weight of 215g.
Filter Threads
The Viltrox 9mm F2.8 X has a filter size of 58mm whereas the Fujifilm XF 8mm F3.5 WR 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 58mm filters that we recommend you to consider for the Viltrox 9mm F2.8 X:
And these are the 62mm filters that we recommend for the Fujifilm XF 8mm F3.5 WR:
Lens Mounts
The Viltrox 9mm F2.8 X has the Fujiflm X lens mount whereas the Fujifilm XF 8mm F3.5 WR has the Fujifilm X 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 Fujiflm X Mount and Fujifilm X-T30 III, Fujifilm X-E5 and Fujifilm X-M5 for the Fujifilm X Mount.
Focal Range
Viltrox 9mm F2.8 X is a prime lens with fixed focal lenght of 9mm which has an effective (full-frame 35mm equivalent) focal range of
13.5mm when used on a APS-C / DX format camera.
On the other hand, the Fujifilm XF 8mm F3.5 WR is a prime lens with fixed focal lenght of 8mm which has an effective (full-frame 35mm equivalent) focal range of 12mm when used on a APS-C / DX format camera.