What is the focal length multiplier and how does it affect the field of view in photography?

The focal length multiplier is a factor that affects the field of view in Photography. It is a ratio that compares the focal length of a camera lens to that of a standard 35mm film camera. A higher focal length multiplier means a narrower field of view, making objects appear closer and larger in the frame. Conversely, a lower focal length multiplier results in a wider field of view, capturing more of the scene in the frame.