Quote:
Originally Posted by MOmilkman
This is what I know about metering. It evaluates the amount of light that is used in a particular frame.
Thats about it.
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To be picky, that's it. Metering is the measurement of the amount of light. There are a number of variations on the specific technique, but that's what it is. There are hand-held meters and in-camera meters, there are various formulas for producing a single "number" from an entire screen full of bright and dark areas, but in the end metering is just the measurement of the amount of light.
Just about all modern cameras have in-camera metering. Furthermore, just about all modern cameras couple that in-camera metering to automatic exposure control.
Many people say "metering" when they mean "auto-exposure". Auto-exposure relies on in-camera metering, but metering doesn't need to be connected to auto-exposure. If you put your camera on M mode the exposure is disconnected from the metering, while the metering continues to operate.