Re: [Gimp-user] GimpLensfun database

[Leonard Evens <len math northwestern edu>]

On Sat, 2013-09-28 at 07:58 -0400, Partha Bagchi wrote:
> Lensfun has tutorials to add your own lens if it does not show up.
> Have you tried those yet?

Yes.  There are several ways to do it, including using hugin, which I
have some experience with. 
> On Sat, Sep 28, 2013 at 12:59 AM, Leonard Evens
> <len math northwestern edu> wrote:
>         On Fri, 2013-09-27 at 22:17 -0500, Leonard Evens wrote:
>         > I have a Nikon D800 with a 24-70 mm lens and a 70-200 lens.
>          These are
>         > standard lenses for the camera.   The filter GimpLensfun
>         shows the
>         > camera (as well as the D800e) but doesn't have entries for
>         either of my
>         > lenses.  I've been trying to use the filter leaving the lens
>         choice
>         > blank.  Does that make any sense?  Something happens, but I'
>         m not sure
>         > the correction is accurate.
>         >
>         > I usually shoot NEF and use darktable to process my images,
>         and that has
>         > the same problem.  It show the same choices of lenses but
>         neither of the
>         > standard lenses.   Presumably the problem is with the
>         Lensfun database.
>         > I know that I can in principle produce correction tables
>         myself, but it
>         > seems like a lot of work, and I haven't been able to figure
>         out how to
>         > do it.
>         >
>         
>         Let me add that I checked /usr/share/lensfun and while it
>         doesn't have
>         an entry for the 24-70 mm lens, it does have one for the
>         70-200 lens.
>         So why doesn't GimpLensfun show that lens as a choice for the
>         d800?
>         Where is it getting its information about lenses if not from
>         that file?
>         
>         
>         --
>         Leonard Evens len math northwestern edu
>         Professor Emeritus, Department of Mathematics, Northwestern
>         University
>         
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-- 
Leonard Evens len math northwestern edu
Professor Emeritus, Department of Mathematics, Northwestern University