The small rural town where I live has installed dozens of cameras in strategic places.
The cameras are installed on a tall lamppost. It is hanging outwards, to get a better view. A dark bulb surrounds it. A box with wiring and stuff is near it, on the lamppost.
The local news article says they are HD cameras with 180º of view and capable of recognizing facial characteristics. This makes it more risky for graffiti painters to leave their messages around. They have to cover their faces when approaching downtown.