Exposure meters

Light meter is a device used to measure the amount of light. It's often used to determine the proper exposure for the photograph. It helps people to determine which shutter speed and f-number should be selected.

• The camera's reflective light meter tries to make all scenes come out averaging about middle gray tone. This is often about correct, because "average" scenes normally do contain a wide mix of light and dark colored areas which do average out about middle tone overall. But there are also many exceptions.