Dome camera is a mini, and its lens mounted into a circuit board, one square inch camera comfortably suited for system monitoring. Some camera yet uses two types of pinhole lenses that flat and conical lens needed a littler hole, and that is a great deal used in security system installations requiring ceiling tiles. The Flat lens is best as the security camera system will be used with thin material, like clothing. Pinhole lens is small and does have a slightly bring down resolution, and it’s usually ½” in diameter.
