It un-screws but is difficult to grasp. Put a wide rubber band around it to grip it with. You can then put on any of the after market filters. UV is the plain glass protector that does not color the images.
It un-screws but is difficult to grasp. Put a wide rubber band around it to grip it with. You can then put on any of the after market filters. UV is the plain glass protector that does not color the images.