Deleting Photos From Finder I am using the Photos app to organize my pictures on my mac. I had imported them a month ago and then decided to go through the Finder and Pictures directory and actually delete pictures I didn't want. So when I go into the new Photos application the pictures are still there. Do I need to go through the app now too and delete them out of there or can I reimport from that same directory. I just didn't understand why it couldn't sync with what I had deleted out of there.
As stated, Photos keeps its own copies in its library.



Provided the photos you have edited and weeded out in Finder are the only photos you want in your library, try this:


Quit Photos if open
Move the Photo Library.photoslibrary file to a new location. (Desktop for instance) This make take a few minutes depending on how large the library is.
Open Photos app.  It will ask you for a Library.
Create a new Library
Import your cleaned up photos to the new Library
If you have what you want you can delete the old Library.


This should save you lots of time.  Just be sure you have backups of your photos!

In case you are curious how Photos stores your photos, ⌥+Click or right click and Show Package Contents