Apr 3, 2016, 01:02
EXIF data is great for getting date and time of photograph. as long as the camera clock is set. I use it a lot for sequences of shots so I know in what order they were taken. It gives you the data of exposure, great for longer exposure shots (it can also explain camera shake!), and of course I always add the data to photographs posted here, as requested in the etiquette section.
Ask yourself, "What's most important for the final image?".