@Luax
Just a note about file size. Cyan will embed the icc profile in the image file. PSOcoated is a large .icc and makes the image file that bit larger.
Some Printing Services ignore the embedded profile anyway or if you know that PSOcoated is used by the Printer, then use Krita where saving the cmyk converted file has an option to embed / or not the icc profile.
edit: There is also a command line option ImageMagick (IM) http://www.imagemagick.org for the conversion. Use the -strip option to lose the icc profile or without -strip to embed it.
Going back to the original question, the big difference in colours, I think that both Magenta and Black (K) channels are missing. just as an example the IM jpeg of that little clip attached.
and a screenshot of the pseudo-cmyk with no M & K
Just a note about file size. Cyan will embed the icc profile in the image file. PSOcoated is a large .icc and makes the image file that bit larger.
Some Printing Services ignore the embedded profile anyway or if you know that PSOcoated is used by the Printer, then use Krita where saving the cmyk converted file has an option to embed / or not the icc profile.
edit: There is also a command line option ImageMagick (IM) http://www.imagemagick.org for the conversion. Use the -strip option to lose the icc profile or without -strip to embed it.
Code:
magick sRGB.png -colorspace cmyk -profile PSOcoated_v3.icc -strip im-cmyk.jpgGoing back to the original question, the big difference in colours, I think that both Magenta and Black (K) channels are missing. just as an example the IM jpeg of that little clip attached.
and a screenshot of the pseudo-cmyk with no M & K