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Metedata - EXIF & IPTC

(4 posts)

  • zanemc
    Member

    Hi

    I can see the EXIF data fields are updated with the camera's data when uploading files while leaving some field blank eg comment , artist, user comment while IPTC & Database fields are left empty if there no uploading rules to add to the feilds .

    I also notice that the "Batch Set Information " can change the EXIF data fields but not the IPTC and indeeed certain EXIF & IPTC data field can be edited.

    Question : What are the EXIF & IPTC data fields used for and what's the advantage in storing / editing the fields . If I were to pass a file onto a friend without non ACDSee or indeed any external recipient , would the EXIF & IPTC data be included ?

    Thanks
    Zane

    Posted On June 8, 2008 - 01:04 AM (1 year ago) (Permalink to this post)

  • philberg
    Member

    zanemc said:

    Hi

    I can see the EXIF data fields are updated with the camera's data when uploading files while leaving some field blank eg comment , artist, user comment while IPTC & Database fields are left empty if there no uploading rules to add to the feilds .

    I also notice that the "Batch Set Information " can change the EXIF data fields but not the IPTC and indeeed certain EXIF & IPTC data field can be edited.

    Question : What are the EXIF & IPTC data fields used for and what's the advantage in storing / editing the fields . If I were to pass a file onto a friend without non ACDSee or indeed any external recipient , would the EXIF & IPTC data be included ?

    Thanks
    Zane

    The EXIF information is embedded in the jpeg picture file image so that all that information accompanies the image file for anyone that would like to know that information. It is not obvious when just viewing the picture with Windows Explorer as thumbnails or filmstrip. The value of all that information, such as camera type, exposure parameters, date/time taken should be obvious and is what makes ACDSee valuable as a photo management tool. Since you can edit some fields, you can enter copyright information, as well as just author, comment etc to try to prove ownership of the intellectual property of the photographer as well as simply identification facts of the picture. Unfortunately, that information is stripped out by some picture processing programs so it is not failsafe.

    When I deliver photos for contract assignments, I always use ACDSee to batch set copyright and authorship information, and then generic situational information describing the assignment in the comment field. Usually requires an additional batch set of file date/time reset to put the file last modified date back to the original EXIF date/time that represents the original file date as shown in Windows Explorer.

    It would be nice if ACDSee had the option of not changing the file date during these EXIF set operations so it didn't have to require a two step process.

    Posted On June 8, 2008 - 06:19 AM (1 year ago) (Permalink to this post)

  • zanemc
    Member

    philberg said:

    The EXIF information is embedded in the jpeg picture file image so that all that information accompanies the image file for anyone that would like to know that information. It is not obvious when just viewing the picture with Windows Explorer as thumbnails or filmstrip. The value of all that information, such as camera type, exposure parameters, date/time taken should be obvious and is what makes ACDSee valuable as a photo management tool. Since you can edit some fields, you can enter copyright information, as well as just author, comment etc to try to prove ownership of the intellectual property of the photographer as well as simply identification facts of the picture. Unfortunately, that information is stripped out by some picture processing programs so it is not failsafe.

    When I deliver photos for contract assignments, I always use ACDSee to batch set copyright and authorship information, and then generic situational information describing the assignment in the comment field. Usually requires an additional batch set of file date/time reset to put the file last modified date back to the original EXIF date/time that represents the original file date as shown in Windows Explorer.

    It would be nice if ACDSee had the option of not changing the file date during these EXIF set operations so it didn't have to require a two step process.

    Thanks that's for the EXIF eplanation but what about IPTC ?

    Posted On June 8, 2008 - 07:33 PM (1 year ago) (Permalink to this post)

  • Chippy
    Moderator

    zanemc said:

    Thanks that's for the EXIF eplanation but what about IPTC ?

    IPTC has many user fields.
    This may explain some of them http://bppdocs.camner.net/html/iptc_info.htm

    EXIF, as well as IPTC is embedded in any image that you wish to edit, or batch edit.
    IPTC, contains information that is not connected with the camera, such as copyright information, description, the name of the photographer,the place where the image was taken,and GPS information, and many more fields. And it stays with the image.Some of them have to be edited manually, and that is where ACDSee comes in, along with programs like Geosetter, http://www.geosetter.de/en/ and others.

    Posted On June 8, 2008 - 10:21 PM (1 year ago) (Permalink to this post)

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