Viltrox AF 85 mm f/2 EVO
8. Vignetting
| A7R IIIa, APS-C, f/2.0 | A7R IIIa, APS-C, f/2.8 |
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Even at the maximum relative aperture vignetting is not especially bothersome, with a very low value of 19% (-0.62 EV). The change of aperture into f/2.8 eliminates this aberration practically completely, with a result of just 4% (-0.11 EV).
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After passing to the bigger full frame sensor there are noticeably more problems and photos below show them pretty well.
Po przejściu na większą matrycę pełnoklatkową problemów jest zauważalnie więcej i wyraźnie widać to na poniższych zdjęciach.
| A7R IIIa, FF, f/2.0 | A7R IIIa, FF, f/2.8 |
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| A7R IIIa, FF, f/4.0 | A7R IIIa, FF, f/5.6 |
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At the maximum relative aperture the result we got is high and reaches 56% (−2.38 EV). It is a result a tad higher than in case of the majority of a bit faster rivals. Small dimensions of the tested lens make themselves felt in full.
By f/2.8 this aberration reaches 39% (-1.43 EV), by f/4.0 it decreases to 25% (-0.84 EV), and by f/5.6 it amounts to 19% (-0.62 EV). The problems in this category end almost completely by f/8.0 and f/11.0 where we got the following results: 13% (-0.41 EV) and 7% (-0.22 EV) respectively.
| Sony A7R IIIa, JPEG, f/2.0 |
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