Nikon Nikkor AF-S DX 18-105 mm f/3.5-5.6 VR ED
8. Vignetting
The situation is a bit better in the middle of the range. At 35 mm and wide open the vignetting amounts to 35% ( -1.25 EV); by f/5.6 it decreases to the level of 22%. At f/8.0 it’s still noticeable (14%) and only at f/11 it drops below 10%.
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At 70 mm and f/5.3 the frame corner illumination loss reaches as much as 43% ( -1.64 EV). Fortunately, the result is better by f/8.0, where vignetting decreases to 19% and becomes completely unobtrusive by f/11, where it is just 9%.
The worst situation we’ve noticed for the maximum focal length. There, by f/5.6 the vignetting level is very high and reaches 52% ( - 2.1 EV). On stopping down by one stop it decreases to 28% and by f/11 it disappears almost completely (10%).