I need such a database of smartphones cameras:
- Each smartphone in the database must have the focal length of BOTH the front camera (typically used for selfies) and the back camera (typically used for landscapes/etc, also called rear camera)
- The most popular smartphones should be covered. My goal is to cover like 70% of the current world users, the more the better. By the way, many users have rather old smartphones.
- Each smartphone should be identified with some identifier that can be found in the EXIF of the photos it takes. Other metadata about the phone is not necessary (I can remove what I don't need).
- Open data: freely reusable and embeddable into Apache2-licensed software