Mark Howe

Your guesses sounds much more educated than mine! Things are still weird on my end unfortunately. I've compiled fresh copies - gutenprint-5.3.4-2020-02-13T and a pull of your selphy_print master branch. Prints were still coming out the same as my original UltraFine photo. I've since got it showing the shadows, but without the specled grey allover the white area by applying the ICC profile (CPK60_UF_HG.icm), set gutenprint Internal Color Correction to No, and 'Color Correction' to Uncorrected (Ultrafine,...

lib70x was on there, I've just pulled down the latest from your git (0.7.2?) - similar results. Printing's straight from the cli, headless on a rPi 3; lp img.jpg No ICC in use for the first tests (Since tested with a cupsICCProfile ../Default: line in the cups Mitsubishi-K60.ppd - no difference) Not sure where I'm looking for the 3D LUT; I've tried with/without Internal Color Correction Also tried with/without Linear Contrast Adjustment Tried a fair few of the 'Color Correction' settings, Uncorrected...

It's worth me saying - there are just visible yellowish artefacts on the Mac-printed image. Also - this is only occuring after what I assume are dodgy jpeg compressions? Printing photo's with large close-to-white areas, doesn't cause this.

It's worth me saying - there are just visible yellowish artefacts on the Mac-printed image.

Mitsubishi K60 - Artefacts in white areas