LensTip.com

Lens review

Viltrox AF 23 mm f/1.4 XF

11 October 2020
Maciej Latałło

8. Vignetting

The Fujifilm X-T2 body, used in our test, doesn't interfere in images provided by the tested lens, no matter whether you examine distortion or vignetting correction. That's why in our analysis we can limit ourselves to just JPEG file format.

X-T2, JPEG, f/1.4 X-T2, JPEG, f/2.0
Viltrox AF 23 mm f/1.4 XF - Vignetting Viltrox AF 23 mm f/1.4 XF - Vignetting
X-T2, JPEG, f/2.8 X-T2, JPEG, f/4.0
Viltrox AF 23 mm f/1.4 XF - Vignetting Viltrox AF 23 mm f/1.4 XF - Vignetting


At the maximum relative aperture you see a lot of problems in this area because brightness loss in frame corners amounts to as much as 50% (-1.99 EV). It's also surprising that by f/2.0 vignetting decreases just slightly, to 44% (-1.68 EV). A more pronounced decrease you can observe only by f/2.8, where vignetting amounts to 30% (-1.02 EV). A moderate level of that aberration can be achieved by f/4.0 and f/5.6 apertures where we got, respectively: 17% (-0.55 EV) and 13% (-0.39 EV). Further stopping down didn't have any measureable effect on the aberration, described here.


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Fujifilm X-T2, JPEG, f/1.4
Viltrox AF 23 mm f/1.4 XF - Vignetting