Exif is a standard for image files created with digital cameras and other input devices. The standard is set by the Japan Electronic Industry Development Association, and formally it is called the Digital Still Camera Image File Format Standard.
Exif files contain either uncompressed TIFF images or compressed JPEG images. In addition, these files can contain many comment fields of various types.
Technical stuff
Exif formats:
TIFF
This is a tag-based file format designed to promote universal interchanges of digital image data.
See also TIF images
JPG
This is the JPEG format with YUV 4:2:2 sampling. The FILE_EXIF_JPEG_411 uses 4:1:1 subsampling (called 4:2:0 sampling in other places).
See also JPEG images
