Bullet Style camera
Dome Style Camera
The Dome Style camera is a very popular style for indoor ceiling mounted applications. However they are able to be utilized in both indoor and outdoor applications as well as ceiling and wall mount applications.
Turret Style Camera
The Turret style camera is kind of a hybrid between the bullet and Dome style camera.
Traditional Box Top Camera
The traditional box style camera is still being produced but is becoming less common than the aforementioned housing styles.