Facts :
Facts You may use Program, Tv, Av, and M modes to meter.
The metering system in a digital camera measures the amount of light in the scene.
The camera calculates the best-fit exposure value based on the metering mode.
How to use Metering :
How to use Metering
Switching between Metering Modes :
Switching between Metering Modes
Examples :
Examples The way to properly expose a sunset photo is to meter on the medium bright areas in the frame, resulting in the photo at top. The circle shows the location metered on. If you were to meter on the brightest areas, near the horizon, the photo would be underexposed (middle photo). If you would meter on the darker areas overhead, the photo would be overexposed (lower photo).