1) Digital photography 
Exchangeable image file format. A standard format for tag data in digital camera files.
Exchangeable Image File Format, details ...
(Digital cameras and photo printers) Exchangeable image format. A standard for image files created with digital cameras and other input devices. Exif files can contain either uncompressed TIFF or compressed JPEG images and can hold data about the camera and settings employed. Using special programs, the information saved can be shown. Exif 2.2 sav...
Exchangeable Image File: the file format used by most digital cameras. For example, when a typical camera is set to record a JPEG, it`s actually recording an EXIF file that uses JPEG compression to compress the photo data within the file
Exchangeable Image File Format
Exchangeable Image File: the file format used by most digital cameras. For example, when a typical camera is set to record a JPEG, it`s actually recording an EXIF file that uses JPEG compression to compress the photo data within the file. 
Image format for recording and storing digital images. Alongside the actual picture data, the Exif format saves additional information in the form of tags containing camera data, such as the recording date or time.
Exchangeable Image File Format. The embedded information about camera and exposure for each image. Most decent graphics programs can read this information.