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<p>[QUOTE=&quot;V. Kurt Bellman, post: 2876823, member: 71723&quot;]Dear OP,</p><p><br /></p><p>This area of inquiry is no small issue to numismatics. The &quot;standard&quot; light by which to grade is rapidly becoming impossible to purchase - the good old incandescent bulb. You are dealing with two issues at once and risking conflating them. Every light source has its own characteristic color, and any digital camera needs to be calibrated to it. People call this &quot;white balance&quot; It is not wise to just snap coin pictures casually. Doing it right takes preparation and care. Now, EVEN AFTER you get the white balance right, light source SIZE matters. Too small is not good, and too large is also not good. LED bulbs that look like incandescent bulbs might be about optimal. Then there is exposure. Auto exposure is to be avoided. Manual exposure is king.</p><p><br /></p><p>Good luck.[/QUOTE]</p><p><br /></p>

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