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<p>[QUOTE=&quot;messydesk, post: 4500944, member: 1765&quot;]First of all, diffuse the light.&nbsp; A lot.&nbsp; On these coins, all of the detail is on the unfrosted part, so you should concentrate on getting light there.&nbsp; The frosting in the fields is so coarse that they&#039;re pretty much unaffected by diffusion.&nbsp; Put another way, they provide their own diffusion, and adding more won&#039;t change the appearance.</p><p><br /></p><p>Second, you need to work on sharp focus and keeping the coin parallel to the image plane (film plane in days of yore).&nbsp; The first picture shows what happens when you don&#039;t do this.&nbsp; It displays longitudinal chromatic aberrations most visible where there are high points of contrast.&nbsp; Where the coin is too close to the lens, you have a magenta fringe.&nbsp; Where it is too far, you have a cyan fringe.&nbsp; Some lenses show this worse than others.&nbsp; My 105 mm Micro-Nikkor shows this a little and it actually works as a good hint for fine focusing.&nbsp; That your picture shows both tells me the coin and image plane aren&#039;t parallel.&nbsp; The ASE obverse shows this effect in the fields, too, because on a much smaller scale, you have some very bright edges throughout the entire coarse cameo finish.[/QUOTE]</p><p><br /></p>

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