Nikon Nikkor AF-S 35 mm f/1.8G ED
8. Vignetting
In that case the problem is not serious. At the maximum relative aperture the vignetting is 20% (-0.66 EV) and on stopping down to f/2.0 that aberration decreases to 15% (-0.48 EV). By f/2.8 the problem disappears almost completely because the light fall-off in the frame corners amounts to just 5% (-0.16 EV).
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There are more problems on full frame and the photos, taken with the Nikon D3x show it very clearly.
If you want to use the f/1.8 relative aperture you must take into account a loss of 46% of light in the frame corners (-1.8 EV). On stopping down the aperture to f/2.0 that value decreases to 40% (-1.44 EV). Although that level can hardly be called low it is worth emphasizing here that the faster and more expensive Nikkor 1.4/35G at the same aperture had a result of 44% so actually a bit worse! The Nikkor 1.8/35G ED also fares here noticeably better than the Canon 2/35 IS which in the vignetting category had a very painful slip-up. The vignetting decreases to a sensible level by f/2.8 where it reaches 23% (-0.77 EV). By f/4.0 it gets just 14% (-0.43 EV) and it drops to 11% (-0.34 EV) by f/5.6. Further stopping down doesn’t have any measurable influence on that aberration.
It is clear that the vignetting is a category which allows the Nikkor 1.8/35G ED to prove its value even in comparison with its faster brother from the same system. It should be praised for such a performance.
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