A little bit sticky on the sides, but basically you can scroll for a while until you hit a certain point, then the camera stops moving until you hit the edge. Actually a lot harder than I thought it would be. I am absolutely going to make a tutorial on this because otherwise I wouldn't be able to recreate it.
Used Griffpatch's tutorial as a starting point: https://www.youtube.com/watch?v=g8xsQx-XkYE&list=PLy4zsTUHwGJJM6OFblu_t-5I5Yw5SxvhT&index=2