When you do an import of images and videos into Photos App if I select a folder that has subfolders will the import process look in the subfolders as well? Or do I have to import from each subfolder one at a time?
Yes, it will allow to select photos to import from the subfolders. If you want to keep the folder structure too in your albums, check "Keep folder organization." This is a very easy thing to test, so give it a try with one of your folders so you can see how it works.
Yes, it will allow to select photos to import from the subfolders. If you want to keep the folder structure too in your albums, check "Keep folder organization."