Timeline for exif tags to crop image without modifying its underlying image data
Current License: CC BY-SA 4.0
7 events
| when toggle format | what | by | license | comment | |
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| Aug 3 at 3:06 | comment | added | StarGeek | The Exiftool EXIF tags page is a better source, as the author of exiftool keeps things up to date. Any tag that is underlined on that page is part of the official EXIF spec. | |
| Aug 3 at 3:04 | comment | added | StarGeek | The Exiv2 page is incorrect. Not all of those are part of the standard. If you follow the link they provide to the Exif Version 2.3 standard (which is a very old version), you will find it doesn't appear there. You can also check the Exif Version 3.0 spec (Download here or see copy on Archive.org). | |
| Aug 2 at 22:07 | comment | added | xenoid | @RomeoNinov In my PDF of the standard (Exif 2.31 from 2016) I don't see these values. They appear to be used in RAW images to indicate extra pixels (used for instance for lens aberration correction). | |
| Aug 2 at 16:41 | comment | added | Romeo Ninov |
@StarGeek, on the top of the page (see link) I read: "These are the Exif tags as defined in the Exif 2.3 standard." And under id 0xc7b5 I see this tag.
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| Aug 2 at 16:33 | comment | added | StarGeek |
I believe that DefaultUserCrop is part of the DNG standard (page 64). It appears in the EXIF block, but is not part of the EXIF standard. I haven't heard of an image viewer that will respect a virtual crop such as this.
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| Aug 2 at 7:50 | history | edited | Romeo Ninov | CC BY-SA 4.0 |
added 158 characters in body
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| Aug 2 at 7:43 | history | answered | Romeo Ninov | CC BY-SA 4.0 |