I have this idea for an improvement of the existing filter “Chromatic Abberations”. My personal problem with this filter is, it just shifts the color channels which looks pretty unnatural (don’t scrap this, there are some use cases for this).
But on photographs chromatic abberations are more circular and get stronger towards the edges of the image. I recently found a post in the KDE-Forums from a person who had the same problem with this filter and actually wrote a new one for G’MIC but the code seems to don’t work (anymore?).
Unfortunately programming/coding really isn’t my cup of tea, it would be great if someone could take a look at this or improve this even more. I really would like to see this in G’MIC.