Far Cry 3 Edit
In Far Cry 3, the Camera is not so used, it serves to mark enemies on the screen and minimap. After being marked, enemies can be seen through walls.
Far Cry 4 Edit
In Far Cry 4, the camera has the same function as Far Cry 3, but more complex, after marking enemies, the screen will show the type and in some missions it is necessary to take pictures, especially in the side-missions Eye for an Eye.