Thanks for all the responses, I have put them in chronological order below in this mail. (My response is slow because I traveled this weekend from Holland to Switzerland to play a day with my grandchildren, tomorrow (Monday) I'll be driving back again) My way of working now is to write the correct lens name manually in Lightroom in the "creator" field. This is quite fast as it can be done in batches For my lenses without ID (K-lenses and 50mm macro ring) this will always be manual of course. If, for lenses with ID, it can be automated at import or afterwards that would be great! I will see how far I come and probably will ask your help, Gerrit, off line as you offered. I think I will be happier if all can be handled in LR and not in another program like Photome..... Greetz, Jos
Gerrit: Have you checked with something such as Exif tool? If the info shows there and not LR, then you might have to use a hex editor to modify cameraraw.dll to 'add' the lens. I had to do that for my Sigma 18-250 HSM lens. Also had to add a lens profile to Camera Raw. --------- David Parsons: IIRC, the 8 and 9 mm issue is a camera limitation, but the lens not being recognized is a Lightroom problem. Firmware may be updated to show the correct focal length, but who know when that will be, it's been an issue for a couple of years. Lightroom will probably correct itself on the next point release (if there is one before LR5 is released). ---- John Francis: It won't be a camera problem; the camera doesn't do anything with the lens ID it receives except stuff it into the image EXIF data. Sigma in the past were notorious for not actually accquiring a real lens ID code from Pentax, but just masquerading as something else with approximately the same focal length/aperture, etc. If they have stopped doing this, and have a unique code for this lens, then I'd expect the next Lightroom update to recognise the code and know all about the lens; Adobe will get the information from Pentax. If Sigma are still playing silly games, though, it's anybody's guess when (if ever) Lightroom will know what to display. --------------- Rob Studdert: All my new Sigma lenses appear to provide a unique code, I have written them into PhotoMe ------------- Gerrit: Hoi Jos I would be willing to help offline with the Camera Raw dll. I will need the lens ID for each and some other info like the lens name. You might get lucky and the lens profile exists in LR already, even if LR/Camera Raw don't recognize the lens. That was/is the situation with my Sigma 18-250 HSM, even after Adobe twice said they added the lens in updates. We can even do it in Dutch if you prefer ------- Gerrit: Hoi Jos In CameraRaw.dll there is a code 3 44 which maps to Sigma or Tamron Lens. If your lenses have unique id codes, then you can modify the dll to give them specific names. If they all use 3 44, then no E.g. my Sigma 18-250 uses 8 8, not used by other lenses. So I overwrote a lens I will never own with the correct text string and set it to 8 8. Presto, my lens is recognized when importing photos. ------- P.Alling: It's a lens problem. IIRC Sig[nificant} Ma[lfunctions] does not license lens data from any manufacture and reverse engineers everything so there are often conflicts between firmware in later Non Sigma cameras and earlier Sigma lenses. I think sigma offers an update service, but I could be wrong about that. These problems used to be so prevalent that there was a web site dedicated to them, it was sometimes fun to read, but seems to have disappeared a few years ago. I haven't cared enough to see if it was saved by the Wayback Machine. ------- -- 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.
