Requirements of photographic raw data

Photographic raw data generally refers to "EXIF information", which requires the photographer to keep information such as camera brand, mobile phone model, flash, shutter speed, aperture size, sensitivity and GPS coordinates.

EXIF is of no use to ordinary people, but as a professional photographer, EXIF can help them understand the shooting process of a photo well, get a good photo of others, and check its EXIF to know what camera, lens and aperture shutter people used to take this photo.

Right-click on the computer and select "Properties". In the "Details" tab of the pop-up window, you can see all the information of this picture, including EXIF. In the mobile phone, you can see the EXIF information of the photo by long-pressing the piece or clicking "More" and "Information" above or below the photo.

Evolution of EXIF information:

EXIF was first formulated by Japan Electronics Industry Development Association in 1996, with version 1.. In 1998, it was upgraded to 2.1, adding support for audio files. In March 22, version 2.2 was published.

EXIF can be attached to JPEG, TIFF, RIFF and other files to add information about digital camera shooting and version information of index map or image processing software.

above content reference: Baidu Encyclopedia -EXIF information.