Fujifilm Fujinon XF 33 mm f/1.4 R LM WR
8. Vignetting
| X-E1, JPEG, f/1.4 | X-E1, RAW, f/1.4 |
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| X-E1, JPEG, f/2.0 | X-E1, RAW, f/2.0 |
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| X-E1, JPEG, f/2.8 | X-E1, RAW, f/2.8 |
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It's clear that on JPEG files vignetting is corrected automatically and you cannot switch it off. As a result you see very moderate values – by f/1.4 brightness loss in frame corners amounts to 27% (−0.92 EV) and it decreases to 24% (−0.78 EV) on stopping down the aperture to f/2.0. By f/2.8 this aberration drops to 22% (−0.71 EV), and by f/4.0 it is already 14% (−0.45 EV). In case of f/5.6 and higher apertures you deal with a level of 10% (−0.32 EV).
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The real situation can only be perceived on RAW files. In this case, at the maximum relative aperture, vignetting is 47% (−1.84 EV). It's a lot but if you take into account the aperture and angle of view of this lens you can say the Fujinon doesn't fare weaker than its rivals. What's more, this result is, within margin of error, practically the same as the result of its predecessor.
It's a bit surprising that vignetting decreases so slowly on stopping down. By f/2.0 you deal with a level of 36% (−1.30 EV), and by f/2.8 the aberration, described in this chapter, drops to 31% (−1.08 EV). By the f/4.0 aperture we got a result of 25% (−0.83 EV), and by f/5.6 and higher apertures vignetting remains more or less the same, keeping close to 22% (−0.72 EV).
| Fujifilm X-T2, RAW, f/1.4 |
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