yes, I had two setups to take the photos, one with two 6000k-lamps directly on the pictures, the other with "inderect" light, because I had to many reflections on the pictures. This are the images with quite bad colours and brightness 😞
I know, lack on equipment, but I'm not a "professional", thus very limited possibilities.
I already tried it with "Auto-Tonwert" and "Auto-Kontrast", the results where not "bad", but I hoped to get it more acurate with the colour-card and grey-scale in the image. I was able to reproduce your settings on the original image, the result is the same as yours und looks much better than the "Auto"-ones.
As far as I understand, I have to approximate the values for every single picture?
Thanks a lot,
kind regards thg