On Wed, Mar 6, 2013 at 6:36 PM, Pascal de Bruijn <[email protected]> wrote: > On Wed, Mar 6, 2013 at 7:47 AM, Russell Edwards <[email protected]> wrote: >> Hi, >> >> I was just fiddling with lens correction on an image taken with my >> Pentax K5II and a Samyang 14mm/2.8 lens. >> >> In the lens correction module it comes up with "Pentax K-5 II" for the >> camera, and "A Series Lens" for the lens, and applies no noticeable >> distortion corrections. >> >> If I change the camera to another Pentax APS-C camera (or a Generic >> 1.5x camera), suddenly it applies a pretty good pincushion correction. >> >> How can this be, when darktable has apparently not identified my lens? >> >> This lens does not communicate electronically with the camera. I told >> the camera the focal length was 15mm (as it has no 14mm option) and this >> is reflected in the exif data. Has darktable somehow just made a >> reasonable guess at how much pincushion a 15mm lens on APS-C will have >> ?? >> >> I will make the effort to calibrate the lens and submit it to LensFun >> but I am just curious what's going on here and where darktable is >> getting its correction parameters from in this instance. I am using >> darktable 1.1+1175~g2434bf0. >> >> Secondly it won't let me choose any other lens unless I select a camera >> other than the automatic "Pentax K-5 II". > > The base problem you're likely having is the missing camera definition > for the K-5 II... I've attached an file you can locally place in > ~/.local/share/lensfun > > If that works for you, please do report it (and the fact that you > tested it), to the lensfun project, so it can be included.
Ok, so I already did, with a few other camera definitions too: https://developer.berlios.de/patch/index.php?func=detailpatch&patch_id=3432&group_id=9034 Regards, Pascal de Bruijn ------------------------------------------------------------------------------ Symantec Endpoint Protection 12 positioned as A LEADER in The Forrester Wave(TM): Endpoint Security, Q1 2013 and "remains a good choice" in the endpoint security space. For insight on selecting the right partner to tackle endpoint security challenges, access the full report. http://p.sf.net/sfu/symantec-dev2dev _______________________________________________ Darktable-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/darktable-users
