People often say to add EXIF information. What does EXIF information mean?

Exif is the abbreviation of English ExchangeableImageFile, originally formulated by JEIDA- Japan Electronics Industry Development Association, and the latest version is version 2.2 released in April 2002. In fact, EXIF is an image file format. EXIF information is a series of information collected by digital cameras during shooting, and then placed at the beginning of the well-known JPG file. That is to say, EXIF information is a set of shooting parameters embedded in JPEG image file format, which mainly includes all kinds of information related to shooting conditions at that time, such as aperture, shutter, ISO, date and time, camera brand model, color coding, and even the sound recorded during shooting and global positioning system (GPS). In short, it is like the date printing function of a fool camera, except that the information recorded in EXIF information is more detailed and complete.