Metering

What metering does is it measures the amount of light that is in the room or around you. The way to activate the meter is by pushing the shutter half way down. In the first meter picture above the camera only read the meter of the computer and it was the only thing to pop up in the picture. In the second picture I metered in on my subjects head to get the light to the way it was. It over exposed the computer to too much light that's why it is so bright. Spot metering can help by focusing in on what you really want to emphasis on rather getting a light that you didn't want and not capturing what you really wanted.