I've been using Krita for a long time now to convert between colorspaces (RGB/CMYK) for printing. Unfortunately, it seems that Krita in version 1.6 is not able to store a DPI resolution value for the image, so it always defaults to 72 dpi.
WORKAROUND
So, in order to just add the resolution information to the image, I've just used ImageMagick, like this:
Code: Select all
convert input-cmyk.tiff -density 300 -compress zip output-cmyk.tiff