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01-07-2019, 01:12 AM - 3 Likes   #1
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Lens Information in EXIF data

Dear Pentax,

could you please include all lens-related information in the standard EXIF fields, instead of just the maker notes, so that we no longer have to run commands like the following
exiftool -tagsFromFile @ '-MakerNotes:LensType>EXIF:LensMake' filename.dng
in order have software like Capture One or sites like Flickr to show all the lens information?

03-30-2019, 04:55 PM - 1 Like   #2
sbh
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Agree. Using Capture one and flickr, there is no lens information. It would be iseful if it was there to work with.
04-01-2019, 04:07 PM   #3
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QuoteOriginally posted by Class A Quote
Dear Pentax,

could you please include all lens-related information in the standard EXIF fields, instead of just the maker notes, so that we no longer have to run commands like the following
exiftool -tagsFromFile @ '-MakerNotes:LensType>EXIF:LensMake' filename.dng
in order have software like Capture One or sites like Flickr to show all the lens information?
Of course, we should also remember that even the information in the MakerNotes is in the form of a numeric code. The actual maker and model names are supplied by the software reading the EXIF, with some variation between tools.


Steve
04-02-2019, 06:44 AM   #4
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Pentax Tags

04-02-2019, 08:36 AM   #5
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QuoteOriginally posted by steephill Quote
ExifTool is unique in publishing their interpretation of the Pentax MakerNotes* to allow a key of sorts into the data stored there and the ExifTool developers' best guesses as to what they represent. Amazingly, the lens list is kept up-to-date and even includes recent non-AF product with KAF2-style mounts offered by Irix.

Implementation of this thread's product suggestion would require the camera body to have a lookup table similar to that packaged into ExifTool to write friendly names into the standard EXIF. It should be noted that manufacturer support for the LensInfo and LensType tags is mixed. For example, Nikon does as Pentax, while Canon fills those fields. Whether Canon supports 3rd-party lenses is unknown, at least to me.


Steve

* MakerNotes is a free-form space with no standard mappings of location or purposes.

Last edited by stevebrot; 04-02-2019 at 09:09 AM.
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