What is focal length?

The focal length of a lens is determined when the lens is focused at infinity. Lens focal length tells us the angle of view—how much of the scene will be captured—and the magnification—how large individual elements will be. The longer the focal length, the narrower the angle of view and the higher the magnification.

What are the four types of focal length?

• Wide length – for landscape, architecture
• Standard – for street, travel and portrait
• Short telephoto – for street photography and portraits
• Medium telephoto – for sports, wildlife and action