Why are most EXIF-Fields write-protected, e.g. DocumentName, FNumber, FocalLegth, ApertureValue and Compression?
EXIF is a fingerprint of the camera and the shooting situation. When you take a picture, these values are saved inside the image file and are safeguarded according to EXIF standards. However, CodedColor declassifies some of these fields, such as Date, ImageDescription, Copyright and UserComment. A field can be edited anytime it’s displayed in black instead of red.
