C-mount cameras (or cs mount security cameras, as they are sometimes called) were the first security cameras and defined the industry. In’70’s and’80’s, c-mount security camera were invented, but they were simply known as security cameras because cs-mount surveillance cameras were the only format available. The iconic boxy cs-mount format was necessary because in the 70’s the circuit boards and other internal items in cameras were still very bulky. As technology has improved over time, security cameras were able to get much smaller and the bullet camera construction has begun to define the idea of a security camera.