How to use an EXIF file.
Whether you’re a professional or a hobbyist, EXIFs are great documentation tools for photographers. They’re useful in a variety of scenarios, including:
Library storage.
The EXIF file format makes storing and retrieving your photos as easy as possible. EXIFs store metadata — or data about your photos’ image data — so that you can group them based on certain criteria, like GPS location, time and date or even specific camera settings.
Recreating styles.
If you see and like a particular photo while surfing the web or viewing a photographer’s digital portfolios, you might be able to request or access that image’s EXIF data. This way, you could discover the photo’s original settings to try to recreate the style yourself. Just make sure to give credit to the original photographer, of course.