Mark (Retro Studios, Austin, Texas, USA) Haigh-Hutchinson 
Real Time Cameras [PDF ebook] 
A Guide for Game Designers and Developers

The control of cameras is as important in games as it is in cinema. How the camera tracks and moves determines our point of view and influences our attitude towards the content. A poorly designed camera system in a game can disrupt a users experience, while a well-designed one can make a good game into a great one. Breaks down the algorithms behind contemporary game camera systems, written by a leading expert in the area.