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<p>[QUOTE=&quot;dougsmit, post: 2308092, member: 19463&quot;]There are two ways to get sharpness when you get very close.&nbsp; Stopping down the lens works but there is a problem called diffraction that reduces overall sharpness when too small an aperture is used.&nbsp; The other is called focus stacking.&nbsp; You take several images (for coins I use four but I have done other subjects with as many as a dozen) with each focused on a different distance from the camera.&nbsp; You must focus manually to do this.&nbsp; The software combines the images using the most detailed part from each parent image producing something sharper than is possible with any one image.&nbsp; This allows shooting tilted coins, high relief coins and very small coins when there is not much depth of field available normally.&nbsp; Most microscope photos you see are focus stacked.&nbsp; Coins are among the easier things you can do with the software.&nbsp; I use a simple freeware program available online called CombineZ.&nbsp; It is way more sophisticated than I need for my purposes.&nbsp; </p><p><img src="http://www.pbase.com/dougsmit/image/111130430.jpg" class="bbCodeImage wysiwygImage" alt="" unselectable="on" /> </p><p><img src="http://www.pbase.com/dougsmit/image/88067025.jpg" class="bbCodeImage wysiwygImage" alt="" unselectable="on" /> </p><p><br /></p><p>Of course it has more uses in nature than with coins but at FREE, CombineZ is a real bargain. </p><p><a href="https://en.wikipedia.org/wiki/CombineZ" target="_blank" class="externalLink ProxyLink" data-proxy-href="https://en.wikipedia.org/wiki/CombineZ" rel="nofollow">https://en.wikipedia.org/wiki/CombineZ</a></p><p><img src="http://www.pbase.com/dougsmit/image/80835879.jpg" class="bbCodeImage wysiwygImage" alt="" unselectable="on" />[/QUOTE]</p><p><br /></p>

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