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<p>[QUOTE=&quot;Dave M, post: 2230637, member: 17469&quot;]Keep in mind that the automatic metering on cameras is set to adjust the exposure assuming the image is an average of 17% gray. So with your technique, if the center of the coin is about 17% gray, then it may work. That may be fairly close for a silver coin, but for gold, bronze or copper, it will not be right.[/QUOTE]</p><p><br /></p>

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