On Tue, 2008-03-18 at 16:23 +0000, norman wrote: > On Tue, 2008-03-18 at 15:46 +0000, Bruno Postle wrote: > > On Tue 18-Mar-2008 at 08:13 -0700, Simon Roberts wrote: > > > > > >Software can certainly help with this, and "that other product" has > > >this built in. Then again, you can buy a couple of really nice > > >lenses for the price you'll pay for that product ;> > > > > Not an immediate solution, but 'over at the hugin project' we have a > > demonstrated technique for automatic correction of transverse > > chromatic aberration. Sponsorship for turning this into an everyday > > tool is available under the Google Summer of Code: > > > > http://wiki.panotools.org/SoC_2008_ideas#tCA_Correction > > This seems to assume that the optics are the cause of the CA whereas I > understand that CA is also caused by the chip in e digital camera. Will > this process take care of that?
The chip doesn't cause CA, it's only the lens. A smaller sensor is more sensitive for CA, because the pixels are smaller and enlarge every lens problem. A CA that stays on one pixel in a Nikon D3 (and is invisible) would cover a lot of pixels on a 1/1.8" chip and would become visible. Rolf http://meetthegimp.org - weekly videopodcast about GIMP and digital photography _______________________________________________ Gimp-user mailing list Gimp-user@lists.XCF.Berkeley.EDU https://lists.XCF.Berkeley.EDU/mailman/listinfo/gimp-user