01-04-2025, 01:39 PM
(This post was last modified: 01-04-2025, 01:49 PM by rich2005.
Edit Reason: typo
)
Interesting question. I do know of differences between applications (Gimp / Krita / PS / even Imagemagick) using the same source RGB image. There is another one now, Gimp 3.0 can export a CMYK jpeg or tiff and that does differ from Gimp 2.10 +cyan plugin.
However I do not find any noticeable difference between a jpeg or tiff from the same application, maybe I am not critical enough.
Not easy to give worthwhile examples ,
FWIW using Krita as a viewer jumping between Gimp 2.10 cyan jpeg then tiff followed by Gimp 3.0 jpeg then tiff. I have found Krita will impose its default icc for tiffs - all these using ISOcoated.
https://i.imgur.com/TWrwLE1.mp4
Much the same but with a RGB - Gimp 2.10 - Gimp 3.0 - PS7 cmyk (- not much difference to Gimp 2.10 cyan but it is noticeable). https://i.imgur.com/90lubOX.mp4
If you are sending off CMYK to a printer, then really you work from the start with Krita. The other thing is, printers these days are better at accepting RGB images (the last one I used only wanted good quality RGB)
I do remember an issue with an earlier Development Gimp 2.99 where cmyk jpegs and tiffs were visibly different, some problem with the jpeg library but I believe that fixed.
One of the Gimp developers does sometimes visit and if so, will give good advice, keep looking in.
However I do not find any noticeable difference between a jpeg or tiff from the same application, maybe I am not critical enough.
Not easy to give worthwhile examples ,
FWIW using Krita as a viewer jumping between Gimp 2.10 cyan jpeg then tiff followed by Gimp 3.0 jpeg then tiff. I have found Krita will impose its default icc for tiffs - all these using ISOcoated.
https://i.imgur.com/TWrwLE1.mp4
Much the same but with a RGB - Gimp 2.10 - Gimp 3.0 - PS7 cmyk (- not much difference to Gimp 2.10 cyan but it is noticeable). https://i.imgur.com/90lubOX.mp4
If you are sending off CMYK to a printer, then really you work from the start with Krita. The other thing is, printers these days are better at accepting RGB images (the last one I used only wanted good quality RGB)
I do remember an issue with an earlier Development Gimp 2.99 where cmyk jpegs and tiffs were visibly different, some problem with the jpeg library but I believe that fixed.
One of the Gimp developers does sometimes visit and if so, will give good advice, keep looking in.