Analog Scanning Exercise Color

You can find the CAT values for the backlight in the xmp but anyhow its hue=41.9º and chroma=37.1%


24-05-25_24-08-13_KodakUltraMax400_OlympusPenF_55.raf (27.9 MB)
24-05-25_24-08-13_KodakUltraMax400_OlympusPenF_55.raf.xmp (10.4 KB)

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All I did was mask your Color Cal and create a second instance with the mask inverted. Then adjusted both until I could get a rough match. I tweaked the color to my preferences on a horrible laptop screen which should never be trusted lol. I would go back and re-do this yourself.


24-05-25_24-08-13_KodakUltraMax400_OlympusPenF_55_01.raf.xmp (13.1 KB)

First of all, the exposure amount of your digital image is inadequate.
This is the raw parade scope of your image in Ansel, with wb coef 1, 1, 1:

You can see that, among that all the data are compacted to the bottom, the blue channel is crushed into noise (and probably the bottom of the green channel). That will give you unexpected result, mostly in the highlights of your image.
You need to adjust the exposure so the red channel is exposed “to the top” of the scope.

Also, doing color calibration for negative film is not needed.
From my experiments, using the white balance module on a Dmin part of the film is better or - even better - expose per channel, so that the Dmin is close to “white” regarding the data of your raw file (R = G = G = B).
You can achieve that with a cold light (more blue / less red) or with a RGB LED light that can be controlled by channel.

How I do:
This is what we get with coef 1, 1.122, 2.720 in white balance:
RAW, and final display:


You can observe the sign of a light leak in the blue channel (the deep).

Then, because the digital picture is underexposed, one need to increase the exposure:

After regular process in Negadoctor, we can get this :


24-05-25_24-08-13_KodakUltraMax400_OlympusPenF_55.raf.xmp (18.1 KB)

You can see that I used no color calibration and no tone mapper (filmic, Agx …)

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Here is my edit. I struggled with negadoctor on this one and depended upon color calibration module and AgX for the editing process.
24-05-25_24-08-13_KodakUltraMax400_OlympusPenF_55.raf.xmp (19.1 KB)

ver BW

Probably because it’s not the good thing to do with negadoctor …
And from what you do in Agx, it is 100% possible to do the same work in the “print” tab. Same for color calib actually.

Also the default settings in the “print” tab are not neutral but they are a good start.

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Thank you for the play.

With ART, GIMP and G’MIC:

24-05-25_24-08-13_KodakUltraMax400_OlympusPenF_55.raf.xmp (10.5 KB)

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