I know digital sensors are less forgiving with CA, but I don\'t believe that PF is purely related to digital. See the last section and reference #17: http://toothwalker.org/optics/chromatic.html
1+.
A lens that I own that demonstrates this phenomenon amply is the Nikkor 180/2.8 ED AIS. On film, the CA remained an issue despite the ED glass but appears more prominent on digital. Axial and lateral CA both compete for prominence on images and in certain light, contaminate the image throughout. Its an optical phenomenon; NX2 claims to be able to undo both now though I haven\'t used the software and haven\'t seen the output to comment. I understand that NX2 eliminated axial CA by desaturating the colors where the algorithm identifies it.
I know digital sensors are less forgiving with CA, but I don\'t believe that PF is purely related to digital. See the last section and reference #17: http://toothwalker.org/optics/chromatic.html
1+.
A lens that I own that demonstrates this phenomenon amply is the Nikkor 180/2.8 ED AIS. On film, the CA remained an issue despite the ED glass but appears more prominent on digital. Axial and lateral CA both compete for prominence on images and in certain light, contaminate the image throughout. Its an optical phenomenon; NX2 claims to be able to undo both now though I haven\'t used the software and haven\'t seen the output to comment. I understand that NX2 eliminated axial CA by desaturating the colors where they are identified.
May 29, 2011 at 09:23 AM
Previous versions of j.liam's message #9629039 « Filters cutting down Purple Fringe CA? »
