EXCERPT page containing first few paragraphs. 2022-05-24 12:03:54
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This page shows examples of distortion at the 12mm setting, both uncorrected and correction.
Distortion correction can reduce micro contrast, since pixels have to be stretch apart in some areas, that is, one pixel becomes larger than one pixel, thus reducing micro contrast and sharpness.
Correction done using Adobe Camera Raw. 220.127.116.114.
Mosaic @ 24mm
The correction by Adobe Camera Raw is looks close to perfect at 24mm: pincushion distortion correction results in straight lines. But this comes with a negative effect: the stretching-apart of pixels with pincushion distortion means that the critical central areas are guaranteed to lose micro contrast.
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