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Message:: [QUOTE="Dave M, post: 1440387, member: 17469"]Keep in mind the light meter function though. An in camera light meter, when you're using the camera's computer to set your exposure, is saying "I'm pointing you at something that's 18% gray. Set the exposure such that this subject will be 18% gray in the photo". If you don't happen to be pointing at 18% gray, then the exposure is wrong and EC is your answer. In Manual mode it's the same routine except that rather than setting exposure, the camera is setting the exposure needle from that metering, and rather than EC you're just adjusting shutter speed, ISO or f-stop. So when you say "the camera thinks they are exposed correctly", I'd say "the camera is correctly exposing for 18% gray subjects, based on its metering algorithm". BUT, if your subject isn't 18% gray, then all bets are off, and the camera was "lied to" when it was metering. In the case of silver coins, they are lighter than 18% gray, so the camera's darkening them up; in the case of copper coins, the reverse will happen. Dave[/QUOTE]