Whether you want to shoot a tennis match or take a close-up of a butterfly, you will need the right lens for the job. The primary differentiators among lenses are focal length (the distance at which the lens begins to focus) and field of view (the area that is visible in the frame). For more National Geographic–approved photography tips and inspiration, read Getting Your Shot.
Excerpted from the book Getting Your Shot published by National Geographic. Photographs by Shutterstock.