Q: Where are photo file names?

I have recently spoken with an Apple Support person and they confirmed that displaying the Image file name was a feature present in iPhoto, but was lost in the updated Photo.  Their suggestion was to send feedback to Apple at http://www.apple.com/feedback.  He said this is the most effective way to get results, and the more of us that do this the better the chance we have of seeing this feature back in a future Photo update.  This was my feedback to Apple: 

"Thank you for the last Photo update... I appreciate some of the improved features that have been made to it. I would however like to note that the absence of the file names appearing underneath the image is sorely missed.  I find this information very useful as I receive photos from other sources and it helps me to identify the ownership of the photos.  I'm kind of lost without it now.   

While the screen may look tidier and friendlier to some, it would be nice to know that this feature could be made available as an option to View (Display Image File Name).

Could I make this as a suggestion for your next update?"

Could I make this as a suggestion for your next update?

Apple personnel aren't there.  We're all users like yourself.  Tell Apple what missing features you'd like restored or new features added in Photos via https://www.apple.com/feedback/photos.html.

You can display the file name or special title under the thumbnails with the latest version of Photos, V. 1.5.

as there are workarounds for the missing batch change feature:

1 - go to the View ➙ Metadata menu option and check all of the metadata items:

Next use one of the Applescript from the Photos User Tips to batch change the title to a variety of formats.  This is one: Photos for Mac - Batch Change Title to Text w/Padded Sequential No.

You can download a compiled version of the script as an application from this tutorial site: P01 - Applescripts from Photos’ User Tips Compiled as Applications

NOTE: the process is rather slow so keep the number of photos to process to around 1000 at a time.  It might take a minute or two for each batch so exercise patience.

Seems an easy solution would be the metadata pulldown menu to include the option to view the "filename" in the list.

Tell Apple what  new features you'd like added in Photos via https://www.apple.com/feedback/photos.html.

Old Toad,

Thank you for the link to Photo Feedback.  Done!