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EXCERPT page containing first few paragraphs. 2021-09-19 23:00:39

Converting RAW-Files from Modified Color Cameras to Monochrome DNG

For those who have converted a color camera to a monochrome sensor (see for example the Nikon D850 Monochrome by, it’s important to process the image properly.

That is, the raw converter has no means to know that the raw file is in fact a monochrome file instead of a color one. If the capture is processed as a color file, inferior results with artifacts will occur, since the raw converter will use Bayer matrix demosaicing on a the monochrome pixels.

Enter LibRaw Monochrome2DNG, which takes the NEF or ARW or other raw format and turns it into a true monochrome raw file, in DNG format. It operates on whole folders or folder hierarchies and is highly efficient in using CPU cores—fast and easy.

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