On Sat, 2013-09-28 at 17:57 -0400, Partha Bagchi wrote: > Here is something you can try. Copy the lens database from svn: > http://svn.berlios.de/wsvn/lensfun/trunk/data/db/ and put it the > appropriate location within lensfun-0.2.7. Rebuild lensfun and you > should have the D800 with 24-70.
Thank you. I may try that. But I don't really understand why it should be that hard. Presumably, the program darktable and the gimp filter gimplensfun are looking somewhere to find correction information. If it is not in /usr/share/lensfun, where in the world is it? > > > Personally, I think you should fix lens distortion (if any) within > your raw editor rather than in Gimp, but that's me. :) I ordinarily work in darktable on NEF fiiles, but I somehow managed to nuke a whole bunch of NEF images and had to instead work with the jpeg images on my backup card. > > > BTW, curious where did you read that the 24-70 is the "standard" lens > for the D800? I have never heard of the D800 being sold with the 24-70 > as a kit lens (or any lens for that matter). It is perhaps an exaggeration to call these "the" standard lenses for the d800. When I was contemplating laying out a fortune for my D800, I posted a query at Nikonians about which lenses I should consider given my needs. The 24-70 and 70-200 lenses were both strongly recommended by several people. Also, my Calumet salesman recommended those same lenses. I think these lenses are common choices for use with the D800. They should definitely be in the Lensfun database, and if my reference above makes any sense, they are, so I am perplexed about why I can't find them. Fortunately, my lenses have very little distortions, so I may be able to avoid using corrections. The 14-24 lens was also recommended, but I didn't think I needed it, and I had already spent enough money. Later I got a 24 mm tilt-shift Rokinon lens which was something of a bargain for under $1,000. Perhaps I should explain that I have been doing view camera 4 x 5 photography with 75 mm, 90 mm, 150 mm and 300 mm lenses. I wanted the Nikon D800 to cover roughly that range. 24 mm is relatively short for 35 mm but not as short as 75 mm is for 4 x 5, so someday I may get a shorter lens for my D800. One of my interests is architectural photography, and my 75 mm lens wasn't even short enough to photograph a building facade from across the street. I had to stitch two images using hugin to capture that scene. I think I can do the same thing easily, if the need arises, using 24 mm on my D800, If I feel a pressing need, I may get a shorter focal length lens for the D800, but given that I am 80 years old, that need may never arise. > > > On Sat, Sep 28, 2013 at 12:29 PM, Alexandre Prokoudine > <alexandre.prokoud...@gmail.com> wrote: > The only update that article needs is that apparently Hugin is > now > capable of outputting XML data for LensFun. > > Alexandre > > On Sat, Sep 28, 2013 at 6:53 PM, Pat David > <patda...@gmail.com> wrote: > > Alexandre had a neat write up on lgw about using Hugin to > generate > > correction parameters: > > > > > > http://libregraphicsworld.org/blog/entry/creating-lens-distorsion-models-with-hugin-lens-calibrator > > > > > > -- > > pat david > > http://blog.patdavid.net > > _______________________________________________ > > gimp-user-list mailing list > > List address: gimp-user-list@gnome.org > > List membership: > https://mail.gnome.org/mailman/listinfo/gimp-user-list > _______________________________________________ > gimp-user-list mailing list > List address: gimp-user-list@gnome.org > List membership: > https://mail.gnome.org/mailman/listinfo/gimp-user-list > > > -- Leonard Evens l...@math.northwestern.edu Professor Emeritus, Department of Mathematics, Northwestern University _______________________________________________ gimp-user-list mailing list List address: gimp-user-list@gnome.org List membership: https://mail.gnome.org/mailman/listinfo/gimp-user-list
