I have just migrated to OS X and have a lot of photos to import from my previous machine. The photos are already organised in a directory structure that I'm very happy with (i.e. 2016-05-04 Glasgow Trip).
Is Photos making a copy of the photos in my existing directories, or is it copying them elsewhere?
I'm thinking of disk space use (are the photos stored twice?), and depending on that answer, will the originals and the Photos versions get out of sync?