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Photography Q&A
Exif Metadata Tutorial
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<blockquote data-quote="removeaimeta" data-source="post: 848992" data-attributes="member: 72101"><p>An original photo can retain useful exposure information such as aperture, shutter speed, and ISO; other embedded EXIF fields vary by camera and software.</p><p></p><p>Sony and Nikon usually put ShutterCount in the MakerNotes of a card-original JPEG or RAW. Fujifilm's ImageCount is easier to find, but it commonly includes electronic-shutter and even pre-shot frames, and some readers wrap it at 32K or 64K. Many Canon JPEGs simply do not carry a reliable mechanical count; you may need to connect the body. A WhatsApp or social export is useless for this, because the MakerNotes are usually already gone.</p><p></p><p>[CODE]exiftool -a -G1 -s -ShutterCount -ImageCount -TotalShutterReleases FILE[/CODE]</p><p></p><p>The same original can also leak a body serial, GPS, timestamps, and the last editor's name. If you are sending a sample to a buyer, work on a copy and strip those first:</p><p></p><p>[CODE]exiftool -gps:all= -location:all= -SerialNumber= -InternalSerialNumber= -Software= copy.jpg[/CODE]</p><p></p><p>Then re-read the copy and confirm GPS and serials are gone before you mail it. A screenshot is not a cleaned file.</p><p></p><p>Disclosure: I made this tool. Browser pass that removes embedded EXIF/GPS/XMP/C2PA/IPTC metadata, with an After list to check the rows: <a href="https://removeaimeta.com/remove-exif" target="_blank"><span style="color: rgb(0, 0, 0)">delete EXIF data</span></a><span style="color: rgb(0, 0, 0)">.</span></p></blockquote><p></p>
[QUOTE="removeaimeta, post: 848992, member: 72101"] An original photo can retain useful exposure information such as aperture, shutter speed, and ISO; other embedded EXIF fields vary by camera and software. Sony and Nikon usually put ShutterCount in the MakerNotes of a card-original JPEG or RAW. Fujifilm's ImageCount is easier to find, but it commonly includes electronic-shutter and even pre-shot frames, and some readers wrap it at 32K or 64K. Many Canon JPEGs simply do not carry a reliable mechanical count; you may need to connect the body. A WhatsApp or social export is useless for this, because the MakerNotes are usually already gone. [CODE]exiftool -a -G1 -s -ShutterCount -ImageCount -TotalShutterReleases FILE[/CODE] The same original can also leak a body serial, GPS, timestamps, and the last editor's name. If you are sending a sample to a buyer, work on a copy and strip those first: [CODE]exiftool -gps:all= -location:all= -SerialNumber= -InternalSerialNumber= -Software= copy.jpg[/CODE] Then re-read the copy and confirm GPS and serials are gone before you mail it. A screenshot is not a cleaned file. Disclosure: I made this tool. Browser pass that removes embedded EXIF/GPS/XMP/C2PA/IPTC metadata, with an After list to check the rows: [URL='https://removeaimeta.com/remove-exif'][COLOR=rgb(0, 0, 0)]delete EXIF data[/COLOR][/URL][COLOR=rgb(0, 0, 0)].[/COLOR] [/QUOTE]
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