EXIF


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EXIF

(EXchangeable Image Format) Descriptive data (meta-data) in an image file that include the date the photo was taken, resolution, shutter speed, focal length and other camera settings. Developed in 1995 by JEIDA for JPEG images, EXIF data was later added to TIFF, RAW and other formats. Most digital cameras support EXIF and save the data in the file headers. However, when an image is edited, the EXIF data may sometimes be removed by the software.

EXIF Dates May Not Be the File Date
When photos are downloaded from the camera into the computer, the date assigned to the image files may be the date the photos were taken (EXIF date) or the date the photos were downloaded. Photo viewers may sort photos by the internal EXIF date without regard to file dates or name order. For example, Apple's iDevices sort photos by EXIF date. In order to be displayed in a different sequence, they must be rearranged in Apple's iPhoto application on the Mac and then downloaded.


An EXIF Reader
ExifReader, written by Ryuuji Yoshimoto, is a software utility that displays EXIF data and can save it in a separate file. The EXIF format contains many more attributes than are shown here. For example, geographic coordinates that identify where the photo was taken are also supported (see georeferencing).
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References in periodicals archive ?
Systweak Photos Exif Editor is available for Windows
The set of images and metadata are received by the Data Processing node and the EXIF tags of the image are inspected.
After creation of images or series of them (images can also be created electronically using a notebook and data can be compared in situ (this function must be supported by the digital camera), we shall proceed to the check of images on a computer according to Exif information (sensitivity, exposure time, focal length, flash use information, and focusing distance) to be sure of maintenance of all parameters as in previous image creation.
GeoTagger then writes the coordinates into the EXIF header of each image.
And if connected to a portable GPS device, the location and time of capture is automatically added to each image as EXIF data.
Additional features include support for IPTC and EXIF header data, and keyword searches and advanced queries via the desktop application and the Web.
Today's digital cameras allow us to save an image in a JPEG (.jpg) format file with EXIF (8) (Exchangeable Image File) metadata describing the picture taken.
Graphic Inspector 1.1 displays information about a file, including its resolution, compression, type, colour mode, colour profile, spot colours, dimensions, fonts and EXIF data.
*JPEG_(not progressive scan) Baseline and EXIF 2.2 formats only
It is in this sense that the photomosaic might be regarded as a viewing aid rather than the definitive recording itself--which remain the individual photographs, which not incidentally retain all of their relevant EXIF data including f-stop, effective ISO, focal length, flash setting, colour space, resolution, date and time of day, camera make and model.
To date, fifteen adapters have been written--for Microsoft Word 2 and Word 6, TIFF, WAV, JPEG (including the EXIF data), BMP, HTML, Open Office, Excel, PowerPoint, Microsoft Works, Word Perfect, PDE GIF, and MPEG.