Godfrey wrote:> I wrote it up two weeks ago. Since I delete older mail from Gmail,> it's gone now.> But basically, you have to find what lens name parameter Pentax uses> ... LensType, LensID and LensName are all valid tokens.> Once you find what Pentax uses, convert the files to DNG, remove the> original lens naming token-value, and replace it with a string-based> LensName using EXIFtool.
Apologies for treading in your circles, Godfrey. :-) I too had a memory of seeing a post from you on Exiftool, but when I looked through the December archives again I couldn't find it. Looked through again today to make sure, but it's not there. I checked the November and October archives for posts regarding Exiftool too, but found nothing from your hand. :-( What you say above is very interesting. Am I right to think that if you remove the LensID data, LightRoom will rely on other tags to identify the lens? I have a Sigma 500/4.5 that doesn't identify itself properly. Not a big deal since it's my only Sigma lens, but it's what I have that I can experiment with. In a K-5 camera-produced DNG it appears in these tags (as listed by ExifTool): ---- XMP-aux ---- Lens = Sigma Lens Lens ID = 3 0 ---- ExifIFD ---- Lens ID = Sigma Lens Kind = 0x18 Lens Type = Sigma (this tag occurs twice in the readout) I'd guess that ExifIFD:Lens Kind is a hex representation of the XMP-AUX:Lens ID and one would have to clear both, and then replace the textual data with the full lens name. Do you think that sounds right? Jostein - who thinks it kinda sucks that image metadata is such a mess, but is glad it exists at all. -- http://www.alunfoto.no/galleri/ http://alunfoto.blogspot.com -- 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.
