The most important file is the DNG camera profile, generated from a real image of a real GM24 chart using Adobe's Profile Editor. It can can be used in Lightroom and Adobe Capture Raw to improve color rendering of M9 images. It's actually quite close to the embedded Leica profile, but tames reds a bit.
There are also two synthetic calibration images. The first of these is a synthetic GretagMacBeth chart that was created by using an existing image as a template, but then replacing all of the image data with new synthetic data calculated from the l*a*b* data of the GretagMacBeth chart using the color profile embedded into the original DNG file by Leica. Thus the file represents what a GretagMacBeth 24 patch chart would look like if photographed by a "perfect" M9. The second image is grey-level step wedge chart.
Please note that you cannot use the GM24 synthetic image to create a camera profile - as the synthetic image was created from the generic embedded profile, you will just get back to the same generic profile; the synthetic images are intended to calibrate your workflow, not your camera!
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