EXCERPT page containing first few paragraphs. 2019-06-16 14:35:39
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Examples of color shading with 18/3.5 Distagon. See the previous page for technical details.
See also See Correcting Color Shading Using Photoshop Masks.
Let’s take a real-world look at an A/B comparison with the Nikon 14-24/2.8.G on the Nikon D3—after all, lab results are not interesting if real pictures show no issues. The scene was shot about a minute apart with both lenses, using 14-bit RAW. Relative results do not vary by aperture; f/8 is shown here, but f/5.6/8/11 were also shot.
Both images were processed identically in Nikon Capture NX 2 into 16-bit TIF files in AdobeRGB color space, with all adjustments off except for. White balance was set to 5200K (daylight).
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