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<p>[QUOTE=&quot;SuperDave, post: 2856085, member: 1892&quot;]Depth of field is a function of aperture, and one of the advantages of a rig like mine is I can force the aperture to a setting which I know will provide sufficient DoF. However, sensor size also is in play with DoF; the smaller the sensor, the greater the field of depth for a given aperture setting. That&#039;s why small point-and-shoot cameras can give sufficient DoF for a coin at (for instance) f/3.5, when I&#039;m forced to work at f/8 (with the concurrent increased lighting problems) to achieve it.</p><p><br /></p><p>An advantage [USER=10938]@coinzip[/USER] had for this specific application was his lightbox. As long as you have enough light, and a wider aperture like his Note was certainly using will help, colors come out much more naturally than in more direct light. That, I think, is because much more light was able to &quot;bounce&quot; nearly vertically off of the coin and into his lens. However, that has the tradeoff of inability to depict luster, because it kills the contrast which is required to show it. This is why axial lighting can be effective with color; in such a setup, the light hitting the lens is all coming absolutely vertically from the coin.</p><p><br /></p><p>The 1879-S we&#039;re showing here, under the room lighting of the show, displays a subtle pastel color and terrific luster. The seller&#039;s counteroffer on price caused me to snap it up, as much for the challenge of imaging a toner in a slab as for the coin itself. And as you can see, imaging toning in a slab is a challenge for me. <img src="styles/default/xenforo/clear.png" class="mceSmilieSprite mceSmilie1" alt=":)" unselectable="on" unselectable="on" />[/QUOTE]</p><p><br /></p>

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