[Gimp-user] chromatic aberration

[David Hodson]

norman wrote:
> I have been copying some old colour transparencies using my digital
> camera and most of the images produced suffer from chromatic aberration
> somewhere within them. I have tried to find some procedure to remove
> these blemishes but, so far, have not found anything I can get to work.
> All suggestions and how to get round the difficulty will be gratefully
> received.

Should be easy(-ish) :

Split image into red, green, blue channels.
Apply lens correction to red and blue channels to align with green.
Recombine channels.

-- 
David Hodson  --  this night wounds time