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<p>[QUOTE=&quot;tomfiggy, post: 2364125, member: 51884&quot;]Mine are not RPM&#039;s though. Just examples of &quot;not an RPM&quot;. I have been taking pics for a while with a cheap USB microscope. I usually tip the top edge of the tube up and set the bottom on the table right next to the coin. I position&nbsp; the camera over the area of interest, and rough focus. Then I move it back and forth until the light is where I want it. Then I focus the lens. In some cases it matters a lot which direction the light is coming from. I might have to take the pic upside down to change the direction of shadows so the feature I&#039;m trying to display is more prominent. Then flip it in Windows Photo Viewer.. I can&#039;t turn the lights off on my camera, but I cut the center of a bottle cap out for a translucent filter. It works best in a dark room.[/QUOTE]</p><p><br /></p>

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