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<p>[QUOTE=&quot;robec, post: 1934389, member: 19094&quot;]You should always have ISO set as low as possible. Since you are using a tripod you won&#039;t need to worry about long shutter speeds.</p><p><br /></p><p>As for f-stops, if you are using center metering, using f56-f11 is more beneficial to a sharper focus, especially if lens is horizontal to the coin. The central focal area will be much sharper than f16 or higher. The peripheral edges may be slightly sharper with f16, f22 and up, but only at the expense of softer detail in the main focal area of the coin.</p><p><br /></p><p>I know of no coin photographer that uses anything but one of the middle (f5.6-f11) aperture setting. I suggest you to do your own test with several aperture settings and make you own conclusion. Please let us know your results.[/QUOTE]</p><p><br /></p>

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