Can members invited to a shared photo album upload their photos to this album as well? If yes, how? If no, is there an easy way to add or move all of the photos in an album into a folder so that I can share the folder instead?
I dont believe there is @Leafchild, sorry. In terms of albums they are a depreciated feature now so there is no way of moving everything over quickly and easily
Hey there @Leafchild - how are you today?
In regards to your inquiry, have you considered using shared folders?
If you'd like to, you can copy or move the photos you'd like to share into a folder, then invite collaborators to that folder so they can upload too.
More info: https://www.dropbox.com/help/files-folders/share-with-others
Let us know how it goes!