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What is exif data?


13 years 3 months ago #18142 by Jeanie in the lens
What is exif data? and where can I find it?
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13 years 3 months ago #18164 by Baydream
Probably more than you ever want to know, but explained to simple terms.
en.wikipedia.org/wiki/Exchangeable_image_file_format
Shoot, learn and share. It will make you a better photographer.
fineartamerica.com/profiles/john-g-schickler.html?tab=artwork
Photo Comments
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13 years 3 months ago #18173 by Rolly
I would say that is the best answer you could give someone. Just c/p wikipedia. :)
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13 years 3 months ago #18303 by photobod
Technical

The Exif tag structure is borrowed from TIFF files. On several image specific properties, there is a large overlap between the tags defined in the TIFF, Exif, TIFF/EP, and DCF standards. For descriptive metadata, there is an overlap between Exif and IPTC Information Interchange Model info, which also can be embedded in a JPEG file.

When Exif is employed for JPEG files, the Exif data is stored in one of JPEG's defined utility Application Segments, the APP1 (segment marker 0xFFE1), which in effect holds an entire TIFF file within. When Exif is employed in TIFF files (also when used as "an embedded TIFF file" mentioned earlier), the TIFF Private Tag 0x8769 defines a sub-Image File Directory (IFD) that holds the Exif specified TIFF Tags. In addition, Exif also defines a Global Positioning System sub-IFD using the TIFF Private Tag 0x8825, holding location information, and an "Interoperability IFD" specified within the Exif sub-IFD, using the Exif tag 0xA005.
[edit] Geolocation

I read this on wikpedia and boy is it way to technical
www.dcimages.org.uk
"A good photograph is one that communicate a fact, touches the heart, leaves the viewer a changed person for having seen it. It is, in a word, effective." - Irving Penn
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13 years 3 months ago #18312 by photobod
Almost all digital cameras save JPEG (.jpg) files with EXIF (Exchangeable Image File) data. Camera settings and scene information are recorded by the camera into the image file. Examples of stored information are shutter speed, date and time a photo was taken, focal length, exposure compensation, metering pattern and if a flash was used.

now why couldnt wikpedia have just said this ???
www.dcimages.org.uk
"A good photograph is one that communicate a fact, touches the heart, leaves the viewer a changed person for having seen it. It is, in a word, effective." - Irving Penn
,
13 years 3 months ago #18314 by Screamin Scott
Cause that would be too easy...
Scott Ditzel Photography

www.flickr.com/photos/screaminscott/
Photo Comments
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13 years 3 months ago #18319 by Baydream

photobod wrote: Almost all digital cameras save JPEG (.jpg) files with EXIF (Exchangeable Image File) data. Camera settings and scene information are recorded by the camera into the image file. Examples of stored information are shutter speed, date and time a photo was taken, focal length, exposure compensation, metering pattern and if a flash was used.

now why couldnt wikpedia have just said this ???

Because everyone can update Wiki.
Shoot, learn and share. It will make you a better photographer.
fineartamerica.com/profiles/john-g-schickler.html?tab=artwork
Photo Comments
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13 years 3 months ago #18369 by Stealthy Ninja
EXIF is information about the file that's included with the file (photo file that is).

Done, next.
img\def

www.aevansphoto.com
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