Is it possible for two or more people to collaborate on a collection? I have a project I'm working on with a couple of other people, and I would like us to have one common collection we could ad photos to, and change metadata (captions) on images the other collaborators have added.
Can this be done in Lightroom?
Lightroom is not designed to be multi-user software.
The only way I can see this happening is if you put the catalog file and all photos on an external hard disk, and then move the external HD from computer to computer as required.
Can Lightroom sync an album in Flickr or another service? With sync, I mean add to Lightroom images uploaded on the Flickr-album. Like Lightroom mobile does.
I am sorry, however this is not possible as Collections are a part of the Lightroom Catalog.
So if you want to share a particular Collection between multiple people, I would suggest you to create a Catalog and work on it with other people.
Please check the following article : Sharing Lightroom Catalog with Multiple Computers
Let me know if it helps.