Re: [Gimp-user] chromatic aberration

2008-03-19 Thread Sven Neumann
Hi, On Wed, 2008-03-19 at 14:16 +1100, David Hodson wrote: 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. That would work well if the light was combined out of exactly three

Re: [Gimp-user] Chromatic abberration

2008-03-19 Thread norman
I have found that a small low cost program called Ptlens does a very fair job of reducing CA, and various other lens distortions.. It only runs on Win2K, XP or Vista or Unix with a windows simulator, either free standing or as a PS plugin. Profiles are available for many cameras. Details

Re: [Gimp-user] Chromatic abberration

2008-03-19 Thread norman
On Wed, 2008-03-19 at 08:32 +, norman wrote: I have found that a small low cost program called Ptlens does a very fair job of reducing CA, and various other lens distortions.. It only runs on Win2K, XP or Vista or Unix with a windows simulator, either free standing or as a PS

Re: [Gimp-user] Chromatic abberration

2008-03-19 Thread Andrew
norman wrote: On Wed, 2008-03-19 at 08:32 +, norman wrote: I have found that a small low cost program called Ptlens does a very fair job of reducing CA, and various other lens distortions.. It only runs on Win2K, XP or Vista or Unix with a windows simulator, either free standing or

Re: [Gimp-user] Chromatic abberration

2008-03-19 Thread norman
snip Ill answer this myself - It appears to work in Wine on Ubuntu 7.10. Ten tries are allowed free of charge so I will try it on a few images and report back. I have done some more tests and, as far as CA correction is concerned, the software does what it is supposed to do when installed