I do worry a bit about wear and tear on the screw thread in the bottom of the camera while placing the camera on tripods and monopods. Is the screw thread in the bottom of the camera replaceable if I happen to damage it. When I look into the hole in the bottom of the camera, I see the head of a small screw, so I am thinking it might be.
Also, on the quick release type tripods, I see a small spring loaded button next to the mounting screw, on the removeable piece that goes into the camera. What is it for?