She was having a problem getting a good picture of the baby. She cannot get him to look at the camera! He keeps looking away. (look at the camera)
You always are so serious when you get your picture taken. Why don't you smile at the camera? (smile at the camera)
Martin pointed his new digital camera at his brother, but he managed to put his hand up before Martin could take a picture. (point the camera at sb.)
The thief was arrested after she was caught on camera stealing food from the supermarket. (be caught on camera)
I just took the old film out of the camera and put a new one in before the next match started. (take the film out of a camera, put a film in a camera)
My father can't act naturally in front of a camera. He always poses for his photos. (act naturally in front of the camera)
The policeman say that crime in the city center has decreased since CCTV cameras were installed. (install security [CCTV] cameras)
(Adapted from Key Words for Fluency: Intermediate Collocation Practice, written by George Woolard, translated by LU Xiaoping, published by Beijing Language and Culture University Press, 2006)