Venus Optics LAOWA FFII 90 mm f/2.8 CA-Dreamer Macro 2X
8. Vignetting
| Z7, APS-C/DX, f/2.8 | Z7, APS-C/DX, f/4.0 |
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At the maximum relative aperture vignetting is slight and practically imperceptible, reaching just 16% (−0.49 EV). What's more, by f/4.0 and f/5.6 this aberration decreases to a completely negligible level of, respectively, 8% (−0.24 EV) and 4% (−0.12 EV).
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After passing to the bigger full frame sensor vignetting becomes more bothersome and you can spot it well in photos presented below.
| Z7, FF, f/2.8 | Z7, FF, f/4.0 |
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| Z7, FF, f/5.6 | Z7, FF, f/8.0 |
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The loss of light in frame corners at the maximum relative aperture reaches 31% (-1.09 EV) and it is a very sensible value. The rival Tamron showed here a level of as much as 54%, the Sony had a result of 53%, and the Sigma that of 36%. The Laowa is definitely a leader here and it is a performance worth our praise for sure.
What's interesting, vignetting doesn't drop very quickly on stopping down. By f/4.0 you deal with a value of 26% (-0.88 EV), by f/5.6 it decreases to 24% (-0.78 EV), and by f/8.0 it amounts to 20% (-0.65 EV). By f/11 and f/16 apertures we got results of, respectively: 17% (-0.52 EV) i 13% (-0.39 EV).
| Nikon Z7, JPEG, 90 mm, f/2.8 |
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