Nikon Nikkor Z 135 mm f/1.8 S Plena
8. Vignetting
| Z7, APS-C/DX, f/1.8 | Z7, APS-C/DX, f/2.0 |
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In case of this size of the sensor vignetting won't be problematic at all. Already at the maximum relative aperture brightness loss in frame corners amounts to just 7% (-0.21 EV), so is negligible. The situation improves further by f/2.0 and f/2.8 apertures where we got the following results: 4% (-0.13 EV) and 2% (-0.06 EV).
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Now let's check how the situation changes after passing to full frame – appropriate thumbnails you can find below.
| Z7, FF, f/1.8 | Z7, FF, f/2.0 |
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| Z7, FF, f/2.8 | Z7, FF, f/4.0 |
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The loss of light in frame corners at the maximum relative aperture reaches just 21% (-0.68 EV) and it is a really good result, proving that the producers made a good use of physical dimensions of this instrument.
What's more, vignetting decreases quite quickly on stopping down the aperture. By f/2.0 you deal with a value of 17% (-0.55 EV), by f/2.8 it decreases to 7% (-0.22 EV), and by f/4.0 to merely 5% (-0.15 EV).
The situation is really strange – we praise a lens designed for full frame mirrorless cameras for low vignetting. Way to go, Nikon!
| Nikon Z7, JPEG, 135 mm, f/1.8 |
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