Fujifilm Fujinon XF 56 mm f/1.2 R WR
8. Vignetting
| X-T2, JPEG, f/1.2 | X-T2, RAW, f/1.2 |
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| X-T2, JPEG, f/1.4 | X-T2, RAW, f/1.4 |
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| X-T2, JPEG, f/2.0 | X-T2, RAW, f/2.0 |
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It's obvious that vignetting is corrected in case of JPEG files and this process cannot be switched off. As a result the values remain moderate. By f/1.2 brightness loss in frame corners amounts to 27% (−0.91 EV) and it decreases to 26% (−0.88 EV) on stopping down the aperture to f/1.4. By f/2.0 this aberration decreases further to 18% (−0.59 EV), and by f/2.8 to 8% (−0.24 EV). In case of the f/4.0 aperture and higher you deal with a level reaching near 6% (−0.17 EV).
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The real level of this aberration can be perceived only after examining RAW files. In this case at the maximum relative aperture vignetting is 47% (−1.82 EV), quite a lot, a bit higher than the respective result of its predecessor. It is interesting because the new lens is physically bigger so you could expect it deal with this aberration better. Of course vignetting is influenced not only by dimensions of the lens but also by its optical complexity and optics layout among other things. We admit the new model's task was much more difficult.
By f/1.4 vignetting is just slightly lower, amounting to 42% (-1.56 EV), but a more significant decrease can be noticed by f/2.0, where we got 27% (-0.92 EV). The aberration, described here, becomes almost imperceptible already by f/2.8 and f/4.0 apertures, where you deal with 14% (-0.44 EV), and 9% (-0.29 EV) respectively.
| Fujifilm X-T2, RAW, f/1.2 |
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