Board cameras are mini cameras that feature a lens mounted onto a circuit board. Their size – sometimes as small as one inch by one inch - makes them well suited for security camera system applications where discretion is important. They are often used for covert security camera system monitoring and some board cameras even utilize pinhole lenses. The average hole size on a pinhole lens is 1/16” diameter. This is the only part of the camera that must be exposed in order for a picture to be obtained. There are two types of pinhole lenses – flat and conical. Conical lenses require a smaller hole and are often used in security camera system installations involving ceiling tiles, while flat lenses are better when the security camera system is to be used with thin material, such as clothing. The small size of a pinhole lens does have a slightly lower resolution than a board lens, which is usually ½” in diameter, thereby allowing more light to enter.