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<p>[QUOTE=&quot;dougsmit, post: 7996215, member: 19463&quot;]I believe diffraction will start limiting sharpness on a small micro 4/3 camera but it is fine for a larger one like &#039;full frame&#039;.&nbsp; Try shooting at f6.3 and see if it is better. Ordinary &#039;kit&#039; zooms are not optimized for close work.&nbsp; You may need to invest in a dedicated macro lens if what you see is not to your liking.&nbsp; I consider the shot you posted as good as any I have seen on Coin Talk from cameras that small.&nbsp; </p><p><br /></p><p>I see no reason to use putty.&nbsp; That is why I suggested the rubber pen grip for coin positioning.&nbsp; Put it on top of the dowel.&nbsp; Do be careful to center the coin properly and do not knock it off.&nbsp; That is why I have a soft pad under where the coin would fall just in case.</p><p><br /></p><p>It is possible to add artificial sharpness in postprocessing (see below).&nbsp; I don&#039;t think it helped your image much.&nbsp; There is also the fact that there is a limit to the detail set by the coin itself but I suspect here the problem is diffraction.&nbsp; Using a wider aperture like f/6.3 will require more careful focusing.&nbsp; It might be better to use manual focusing. If your camera allows magnifying the image for focusing or has other focus assist tools, try them.&nbsp; Every camera is different. I have never touched a 4/3 camera so it is up to you. </p><p>[ATTACH=full]1387060[/ATTACH][/QUOTE]</p><p><br /></p>

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