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#1
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What is relationship between IPTC and EXIF? How used by image cataloging systems?
How are these two linked? I'm also interested in definitive reference
sources for each of these. Also, I'm interested in learning about image cataloging systems that read/write/modify EXIF or IPTC data. I'm posting to rec.photo.equipment.35mm because I assume that even film-based photography can utilitize these data formats? Yes? No? Thank you. Father Kodak |
#2
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What is relationship between IPTC and EXIF? How used by image cataloging systems?
Father Kodak writes:
How are these two linked? I'm also interested in definitive reference sources for each of these. Also, I'm interested in learning about image cataloging systems that read/write/modify EXIF or IPTC data. I'm posting to rec.photo.equipment.35mm because I assume that even film-based photography can utilitize these data formats? Yes? No? Yes, definitely. Although many of the EXIF fields are really specific to digital photography, and the ones that aren't (like date and time) are duplicated in IPTC. However, if you have the information, you could certainly put aperture and exposure information for film photos into EXIF fields. Thumbs Plus (www.cerious.com) has quite a good IPTC editor application embedded. Nothing to edit EXIF, though. Irfanview, the wonderful free viewer, also has an adequate IPTC editor, but also doesn't edit EXIF. Exifer says it edits exif, but mostly it copies exif from image to image, it doesn't seem to offer much ability to change individual fields, that I could find. There's a PERL library for IPTC and one for EXIF (or one for both, maybe; probably many exist, and I forget what I'm using), so you can script complex changes if you need to. -- David Dyer-Bennet, , http://www.dd-b.net/dd-b/ RKBA: http://noguns-nomoney.com/ http://www.dd-b.net/carry/ Pics: http://dd-b.lighthunters.net/ http://www.dd-b.net/dd-b/SnapshotAlbum/ Dragaera/Steven Brust: http://dragaera.info/ |
#3
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What is relationship between IPTC and EXIF? How used by image cataloging systems?
You can also use a program called photo mechanic.
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#4
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What is relationship between IPTC and EXIF? How used by image cataloging systems?
Father Kodak wrote:
I'm also interested in definitive reference sources for each of these. For EXIF you can find reference information at http://www.exif.org for IPTC you should look at http://www.iptc.org Wolfgang |
#5
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What is relationship between IPTC and EXIF? How used by imagecataloging systems?
David Dyer-Bennet wrote:
Although many of the EXIF fields are really specific to digital photography, and the ones that aren't (like date and time) are duplicated in IPTC. However, if you have the information, you could certainly put aperture and exposure information for film photos into EXIF fields. When I use a film lab to develop the APS film from my Minolta S-100, and have it scanned to CD, they also put in the exposure info, etc that the high end APS cameras record onto the cassette. It all ends up as EXIF attached to the JPEGs. |
#6
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What is relationship between IPTC and EXIF? How used by imagecataloging systems?
Father Kodak wrote:
How are these two linked? I'm also interested in definitive reference sources for each of these. Also, I'm interested in learning about image cataloging systems that read/write/modify EXIF or IPTC data. I'm posting to rec.photo.equipment.35mm because I assume that even film-based photography can utilitize these data formats? Yes? No? IPTC is intended for journalism photography to identify the photographer, date and location. EXIF is mostly for digital camera data. The specifications for these are easily messed up so be careful editing with freeware & cheezy programs, I found photoshop to be the most reliable although not convenient. Even then some of the info like ISO on a Nikon D70 is kept in a proprietary 'makernote' section and lost when edited in PS. I found these are not the best place to store information because of the compatibility problems and it's so easy to save a version without that data like for web versions and in that case the full EXIF makes the files rather larger than necessary. My solution is plain text files in the same folders with the file name and a .TXT extension. That is foolproof and easily adapted or customized/automated. I use PHP scripts to automate editing as a dynamic web page. Mostly I just add annotation but it would also be nice to extract the basic camera shooting data. I simply keep original jpegs or raw for the record. |
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