Archived posting to the Leica Users Group, 2013/10/16
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]check this out, atleast with the ziess 21/2.28 there red corner shift http://blog.sina.com.cn/s/blog_643b266c0102e29p.html use google to translate ------------------------------------- regards, mehrdad On Wed, Oct 16, 2013 at 2:42 PM, Bob Adler <rgacpa at gmail.com> wrote: > I would think if you wanted to systematically correct this there are a > couple of ways: > > Outside of LR, use Capture 1 Pro. This is what I use for MF. Probably not > a great option because it's slow work and it uses C1's raw processor which > is different than LR. So a big learning curve for C1's raw processes > (though just as good as LR in my opinion). > > For each lens that vignettes, take a shot through a translucent target > (like the one I use in MF for lens cast correction). To be anal you would > need to do each lens at each aperture. Then go into LR and in the develop > module correct for lens cast (CA) and vignetting (a negative vignette). > Test in CS in the LAB panel to see if you're close. Then save that develop > model to be used with that lens under various apertures. Note taking would > be required as my guess is that, like the M's, aperture EXIF data would be > a guess. > > KISS: Take the image you like, use the new lens correction tab in the > develop module and apply negative vignetting to taste. This is what I would > do! > > Best, > Bob > > Sent from my iPad > > On Oct 16, 2013, at 10:30 AM, "Frank Filippone" <red735i at verizon.net> > wrote: > > > > > He notes vignetting issues.... can that not be taken out in LR with (if > > needed, user derived) lens corrections? > > > > Frank Filippone > > Red735i@ > > _______________________________________________ > > Leica Users Group. > > See http://leica-users.org/mailman/listinfo/lug for more information > > _______________________________________________ > Leica Users Group. > See http://leica-users.org/mailman/listinfo/lug for more information >