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Nikkor AF 35mm f/2 D - Review / Test Report - Analysis |
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Lens Reviews -
Nikon / Nikkor (APS-C)
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Page 2 of 3
Distortions
The AF 35mm f/2D exhibits a moderate degree (0.64%) of barrel distortions which
shouldn't show up in most real world images.
The chart above has a real-world size of about 120x80cm.
Vignetting
The AF 35mm f/2D is a full frame lens thus enjoying a sweet spot advantage
on APS-C DSLRs. Nonetheless it still produces a relatively pronounced max.
vignetting of 0.74 EV at wide-open aperture which is a little higher than
desirable for such a lens. However, from f/2.8 the issue is basically negligible.
MTF (resolution)
The Nikkor showed quite impressive resolution figures in the MTF lab.
The center performance is excellent straight from the max. aperture
setting whereas the borders are only able to reach an average level
here. However, at f/2.8 the borders improve significantly to very good
quality. The peak performance of the lens is reached in the f/5.6 to f/8
range where both the center as well as the borders are excellent.
Please note that the MTF results are not directly comparable across the different systems!
Below is a simplified summary of the formal findings. The chart shows line widths per picture height (LW/PH) which can be taken as a measure for sharpness.
If you want to know more about the MTF50 figures you may check out the corresponding Imatest Explanations
Chromatic Aberrations (CAs)
Chromatic aberrations (color shadows at harsh contrast transitions) are relatively
moderate with a maximum well below 1 pixel on the average at the image borders.
At f/4 there's a local minimum of just 0.3 pixels which is very low. Generally
the issue shouldn't produce any headaches in most scenes.
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