How to view files names under thumbnails in Photos Library?
On my iMac running Mojave, with Photos version 4, I see file names, such as IMG_0134 under every photo or video , unless I've renamed the photo with a title. On my MacBook Pro running High Sierra with Photos version 3, no file names appear unless I've added a title. I haven't found a way to turn this feature on. Is showing file names a Mojave/Photos v4 feature or is there a way to view them in High Sierra?