Viltrox AF 35 mm f/1.7 Air review - Vignetting

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Viltrox AF 35 mm f/1.7 Air

16 October 2025

Maciej Latałło

8. Vignetting

Let's check vignetting of the tested lens for both JPEG and RAW files developed by neutral software.

X-T2, JPEG, f/1.7	X-T2, RAW, f/1.7

X-T2, JPEG, f/2.0	X-T2, RAW, f/2.0

X-T2, JPEG, f/2.8	X-T2, RAW, f/2.8

X-T2, JPEG, f/4.0	X-T2, RAW, f/4.0

In case of JPEG files the situation looks very sensible indeed. At the maximum relative aperture vignetting reaches 26% (−0.86 EV), a really moderate result for the f/1.7 aperture, offered by the tested lens. By f/2.0 this aberration decreases to 23% (-0.77 EV), and by f/2.8 it amounts to 22% (-0.73 EV). By f/4.0 and f/5.6 all problems end completely because our results in that place amount to, respectively, 17% (-0.53 EV) and 11% (-0.35 EV).

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Still Fujifilm bodies are known for correcting JPEG files without asking for permission even if you attach to them third-party lenses. Only uncorrected and uncropped RAW files are able to show you the real level of this aberration. Here the results are noticeably higher – at the maximum relative aperture you have to take into account light fall-off reaching 52% (−2.15 EV). It is a high value but still you have to remember that you deal here with a relatively small lens that additionally provides a significantly wide angle of view.

By f/2.0 vignetting decreases to 46% (−1.80 EV), and it is a result practically the same as the result of the Fujinon XC 2/35 by f/2.0. By f/2.8 you get a level of 30% (−1.03 EV). By f/4.0 you have to take into account a loss of 23% (−0.74 EV), and by f/5.6 this value reaches 16% (-0.52 EV). Further stopping down doesn't have any measureable effect on this aberration.

Fujifilm X-T2, RAW, f/1.7