The Marshall V-PL26CS-R is an amazing pinhole lens designed in the shape of a right angle. This unique configuration is highly useful in covert applications as it makes it possible to place even a large CCTV camera flat behind a wall or ceiling surface in spaces where a perpendicularly positioned camera will not fit. And because the front of the lens tapers off to a tiny opening, it only requires a hole less than 0.15 of an inch from which to see an entire room.