Obtaining a camera in Fallout 76 is very easy nowadays. All you have to do is get the personal terminal from the atomic shop and start the quest. You will then proceed to find a deceased tourist at a (potentially) far away location. Open the data menu and see where the quest is located on the map.
Once you’re there, you will loot a Broken ProSnap Deluxe Camera. You will then need to go to a Tinker’s workbench and repair the camera.
For this you will need 3 Adhesive, 5 Aluminum, 1 broken camera, 2 Glass, 5 Silver and 3 Springs.
To craft camera film you will also need 3 Adhesive, 5 Crystal, 5 Plastic and 5 Silver.