I've edited on my PC several hundred photos and have copied them to an SD card so I can import them to the Photos app. Almost all of the edited photo filenames have an underscore in them, or a dash, or a space, or.....
When I plug the SD card into the adapter only the photos with an original name as created by the camera (e.g., P1060003.JPG or P1060003.jpg) show up.
Even simple names like ABC.jpg are ignored.
What are the rules for photo file names for importing into the Photos app?
Using iPad2 with latest iOS (6.something)