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.
Gerrit -----Original Message----- From: PDML [mailto:pdml-boun...@pdml.net] On Behalf Of Jos from Holland Sent: Friday, June 7, 2013 6:39 AM To: Pentax-Discuss Mail List Subject: Pentax K5 does not recognize Sigma 8-16 lens Dear group, I aquired the Sigma 8-16mm lens for use on my K5. I noticed that the camera does not show any lens name in the metadata info in Lightroom (version 4.4) and the focal length is only mentioned down to 10 mm, 9 and 8 is blank. Camera SW version is 1.14, (the latest) Is this a camera problem or a Lightroom problem? Greetz, Jos -- PDML Pentax-Discuss Mail List PDML@pdml.net 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 PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.