Okay, I think I've figured out how to deal with DNGs for the Sigma lens. First, I placed a copy of the ExifTool.exe on my desktop and renamed it to:
exiftool(-@ SigmaExif.txt).exe This enables me to drag-and-drop files or whole folders on the icon to execute the alterations. The weird file name tells exiftool to take the file SigmaExif.txt as input arguments. The text file should also reside on the desktop. The contents of my input file is this: -ExifIFD:LensMake = Sigma -ExifIFD:LensModel = Sigma 500mm F4.5 apo ex dg -XMP-aux:Lens = Sigma 500mm F4.5 apo ex dg -overwrite_original The ExifIFD: tags sets the basic necessary data. Lightroom duplicates the lens info in XMP, so by including the XMP-aux: tag it also works for images already imported in Lightroom. The -overwrite_original argument prevents exiftool from creating a copy of the file before applying changes. Lightroom will display an icon on the image thumbnail in Library when the change is done, indicating that the metadata in file and catalog are out of sync. "Reload from file" was kinda cool. In principle I guess the same should work for Igor's case by simply replacing the Sigma letter soup with the correct Tokina nomenclature. Hopefully Godfrey will set me straight if I'm wrong... :-) If you want to go advanced, I see from exiftool documentation that conditional processing is possible. So it should be possible to make an argument file that works selectively on a particular lens regardless of what you throw at it. That could be handy for processing a folder with images shot with various lenses... Jostein -- 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.
