Am Thu, 25 Sep 2014 22:35:29 +0200 schrieb Аl Воgnеr <[email protected]>:
> darktable 1.4-2 amd64 (Xubuntu 14.04 - Trusty) > > Sigma 8-16mm F4.5-5.6 DC HSM (Pentax) is not found in the lens > correction menu, but /usr/share/lensfun/slr-sigma.xml contains this > lens. > > According to http://wilson.bronger.org/lensfun_coverage.html there are > 2 crop factors: 1.613 and 1.534. AFAIR the crop for Canon is bigger, > so maybe I have to change the xml-file? > > What do I have to do, to see this lens in the DT-menu? If I select a Canon 40D, eg, the Sigma 8-16 is recognized. The correction is not perfect, but a lot better, than without it. If I try a Nikon DSLR the Sigma 8-16 is not recognized, as well as with my Pentax K-5. So the correction is somehow Canon related. How can I a assign this correction to Pentax too? As already written, http://wilson.bronger.org/lensfun_coverage.html mentions 2 crop factors for the Sigma 8-16. > From /usr/share/lensfun/slr-sigma.xml > > <lens> > <maker>Sigma</maker> > <model>Sigma 8-16mm f/4.5-5.6mm DC HSM</model> > <mount>Sigma SA</mount> > <mount>Canon EF</mount> > <mount>Nikon F AF</mount> > <mount>Pentax KAF</mount> > <mount>Sony Alpha</mount> > <!-- FixMe: Actually cropfactor 1.613 --> > <cropfactor>1.6</cropfactor> > <calibration> > <!-- Taken with Canon 50D --> > <distortion model="ptlens" focal="8" a="0.02364" > b="-0.13856" c="0.19092" /> <distortion model="ptlens" focal="10" > a="-0.00766" b="0.00319" c="0.00208" /> <distortion model="ptlens" > focal="12" a="-0.00826" b="-0.00321" c="0.04216" /> <distortion > model="ptlens" focal="13" a="-0.00831" b="0.02128" c="-0.00924" /> > <distortion model="ptlens" focal="16" b="0.0033" /> <tca model="poly3" > focal="8" br="0.0000456" vr="1.0000029" bb="-0.0000656" > vb="1.0001880" /> <tca model="poly3" focal="10" vr="1.0002" vb="1" /> > <tca model="poly3" focal="12" vr="1.0002" vb="1" /> <tca model="poly3" > focal="13" br="0.0000404" vr="1.0000986" bb="-0.0000936" > vb="1.0001406" /> <tca model="poly3" focal="16" br="0.0000285" > vr="1.0001326" bb="-0.0000943" vb="1.0001116" /> </calibration> > </lens> Αl ------------------------------------------------------------------------------ Meet PCI DSS 3.0 Compliance Requirements with EventLog Analyzer Achieve PCI DSS 3.0 Compliant Status with Out-of-the-box PCI DSS Reports Are you Audit-Ready for PCI DSS 3.0 Compliance? Download White paper Comply to PCI DSS 3.0 Requirement 10 and 11.5 with EventLog Analyzer http://pubads.g.doubleclick.net/gampad/clk?id=154622311&iu=/4140/ostg.clktrk _______________________________________________ Darktable-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/darktable-users
