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<p>[QUOTE=&quot;dougsmit, post: 4893954, member: 19463&quot;]<a href="https://www.cambridgeincolour.com/tutorials/diffraction-photography.htm" target="_blank" class="externalLink ProxyLink" data-proxy-href="https://www.cambridgeincolour.com/tutorials/diffraction-photography.htm" rel="nofollow">https://www.cambridgeincolour.com/tutorials/diffraction-photography.htm</a></p><p>While fine for a large sensor (full frame 35mm), f/14 will run afoul of diffraction limiting sharpness on cameras with very small sensors. The above link explains this well be it is a bit more technical that most people will want.&nbsp; To be on the safe side, I use f/11 with my &#039;full frame&#039; camera and f/8 with the 1.6x crop factor cameras I previously used.&nbsp; Point and shoot cameras, depending on model, will need to use something in the f/4 to f/5.6 range to avoid diffraction limitation of sharpness.&nbsp; I had one point and shoot that would not stop down past f/11 because the manufacturer knew that people would be unhappy with the images.&nbsp; On the other hand, lenses used on an 8x10&quot; view camera often stopped down to f/64 but negatives that size were usually used as contact prints without enlargement so there was no problem. </p><p><br /></p><p>If you are using a small point and shoot camera without interchangeable lenses,&nbsp; I would suggest trying f/5.6 at the most.&nbsp; If that does not do it you may have to choose between two kinds of unsharpness.&nbsp; Focus stacking is a great help but usually, in my experience, needed only when shooting coins at an angle as shown on the image below.&nbsp; Most people will not care to get that involved for normal needs.&nbsp; The four images at the right each have the plane of sharp focus in different places as indicated by the V marks.&nbsp; Software combines the images into one that is sharp everywhere.&nbsp; I have personally never done a focus stack over 100 images but coins often respond to 4 to 20 input images.</p><p>Click to enlarge.</p><p>[ATTACH=full]1181134[/ATTACH][/QUOTE]</p><p><br /></p>

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