Well, this is all very interesting. I edited the .lcp file for the Sigma 18-250, no effect. I then moved the file to Appdata\adobe\cameraraw tree, and I saw that the new lens_id exists in the index.dat file. I then deleted all Lens profiles from the lightroom resources directory, ran the import again. The index.dat file in Appdata\...\cameraraw reflect the much shorter list of lenses (only the one in AppData\Adobe\CameraRaw) . Tried import again, no lens id. However my Tamron 18-250 in a test photo is still recognized in spite of not having a lens profile!!???? LR clearly is using 2 or more ways to detect the lens type, the .lcp files are the only one I can find.
I tried using the import using Copy as DNG and as Add, no difference. I have in the meantime set an Import preset to apply the Lens correction and thus at least I get the benefit there. But I can't search on that lens in Library. If anyone has any ideas on how to get LR4.2 to see my Sigma on Import, help! :-) I will of course try asking on the Adobe fourm as well but given the number of ppl there who think that the text of the lens name is in the DNG file (from the camera) I am not too hopeful. Gerrit -----Original Message----- From: Gerrit Visser [mailto:[email protected]] Sent: December 1, 2012 9:44 AM To: 'Pentax-Discuss Mail List' Subject: RE: Lightroom vs Sigma 18-250 question Hi Peter THANK YOU. I was only looking at the .lcp files in the Sigma/Pentax folder so didn't realize there should be that field present there. I did some quick testing by adding the field but no luck. This includes deleting the index.dat file in camera raw directory to force a rebuild, the lensid "8 8" is now there but on import the lens is still unknown. Have to go out for a while and will return to this later. Thank you for this most useful hint. Gerrit -----Original Message----- From: PDML [mailto:[email protected]] On Behalf Of Peter Loveday Sent: December 1, 2012 7:53 AM To: Pentax-Discuss Mail List Subject: Re: Lightroom vs Sigma 18-250 question The LCP files do indeed contain the ID, at least for the Pentax lenses. It is absent from some (all?) Sigma ones. I recall there are some conflicting IDs with third party lenses, presumably due to Sigma's unwillingness to actually licence anything? Anyway, If you look in, say, the Pentax DA 55 LCP file, you'll see: <stCamera:LensID>8 226</stCamera:LensID> So I guess one could put the same (but I suppose 8 8) in the appropriate sigma file. Seems like you need to put it in every entry in the correction table. I have no idea if this will make it use this ID to identify the lens, mind you. - Peter -----Original Message----- From: Bruce Walker Sent: Saturday, December 01, 2012 6:57 AM To: Pentax Discuss Mailing List Subject: Lightroom vs Sigma 18-250 question Posting for a K-5 -toting friend (Gerrit Visser) who just got Lightroom for Windows. Gerrit asks ... "The puzzle is why the Sigma 18-250 shows as Unknown lens in Library/metadata while it is listed ok in Develop. The lens id is 8 8 which is in the exif, exiftools displays the correct lens etc. Has anyone figured out where LR/Camera Raw keeps it mapping tables? The .lcp files do not contain any information regarding the lens id, only corrections. As an added twist, the release notes have the word Macro in the Sigma lens name, while it appears nowhere else." -- -bmw -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions. ----- No virus found in this message. Checked by AVG - www.avg.com Version: 2012.0.2221 / Virus Database: 2629/5427 - Release Date: 11/29/12 -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions. -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
