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).
References in periodicals archive ?
The topics include a close-range photogrammetric solution working with zoomed images from digital cameras, a four-point planar homography algorithm for rectification photogrammetry: development and applications, applying camera matching methods to laser-scanned three-dimensional scene data with comparisons to other methods, evaluating the accuracy of image-based scanning as a basis for the photogrammetric reconstruction of physical evidence, and evaluation two methodologies for lens distortion removal when exchangeable image file format data is unavailable.
There are many other image formats, but this discussion will focus on digital photos (JPEG files) in the EXIF format (Exchangeable Image File Format).
EXIF 2.3 (Exchangeable Image File Format for Digital Still Cameras)
Images such as photographs from digital cameras and cellphones often have Exchangeable Image File Format (Exif) metadata embedded in the image file that gives not only the date and time the picture was taken, but can provide details about the location (from GPS), camera type, camera settings, and more.
The EXIF (Exchangeable Image File format) document of the snapshot reveals that it was taken by a device with code number C6902 (non-LTE Sony Xperia i1) and also showed that the image had a high-definition 3936x5248p resolution taken from a 20.6-megapixel camera with f/2.0 aperture.
These include the latitude and longitude in a set of attached numbers called the EXIF (Exchangeable Image File Format) values.
Location-aware phones and some cameras are also able to embed geolocation data right into the EXIF (exchangeable image file format) data of a photograph.
With the new GPS feature, the Panasonic LUMIX ZS7 is the ultimate travel companion, and can record the latitude and longitude in the EXIF (Exchangeable Image File Format) data, while also displaying the location information real-time while shooting and during playback.
are endorsing Exchangeable Image File Format 2.2 (Exif Print), which is an internationally supported, open standard file format that enables users to capture and display digital images with accurate colors.
The geotagging feature injects location data directly into each photo s Exif header (Exchangeable image file format), allowing photos to be filed and retrieved according to where they were taken.