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<p>[QUOTE=&quot;desertgem, post: 1735724, member: 15199&quot;]In the bullion business, 99.99% is worth more than 90% silver than 40% silver, than 10% silver due just to the facts of the amount of silver. With cameras, it is the resolution. The days of&nbsp; 1.3, 2, 3, even 5 mpixels has past. The USB microscopes generally have plastic lens, and the magnification is generated &quot;digitally&quot; by taking the original&nbsp; 2mp image and cropping it ( less original pixels) and then digitally magnifying it by adding similar adjacent pixels so it doesn&#039;t pixelate. SO a magnified blur is just a larger magnified &quot;somewhat&quot; fake blur, but it isn&#039;t a true image of what it is. The extended focus Dinolite ( close to $400) is a high quality unit, but still is outdone by a classical stereo microscope of the type here</p><p><a href="http://www.ebay.com/itm/BAUSCH-LOMB-STEREO-MICROSCOPE-7X-30X-ZOOM-/121132926055?pt=LH_DefaultDomain_0&amp;hash=item1c3415c467" target="_blank" class="externalLink ProxyLink" data-proxy-href="http://www.ebay.com/itm/BAUSCH-LOMB-STEREO-MICROSCOPE-7X-30X-ZOOM-/121132926055?pt=LH_DefaultDomain_0&amp;hash=item1c3415c467" rel="nofollow">http://www.ebay.com/itm/BAUSCH-LOMB-STEREO-MICROSCOPE-7X-30X-ZOOM-/121132926055?pt=LH_DefaultDomain_0&amp;hash=item1c3415c467</a></p><p><br /></p><p>and by using a &quot;canon point and shoot&quot;&nbsp; 12 mp with macro and Image stabilization, and a steady hand, shooting through an eyepiece, you can do many times better than even the Dino-lite. You can extend focus and coverage range immensely, and after searching coins for decades, eyes get&nbsp; the need of help, and these help me to continue. I have 3 with various setups for gemstones to coins to stamps, etc. It may cost a little more in the beginning, but when I divide my original cost ( all are college or industry surplus ) by the years of no problems, it costs much less than buying another USB scope when the computer OS no longer operates the software.&nbsp; The photos above are better than the average, but it is easy to see the fake pixelation and the fuzzy edges that can only be corrected with photoshop type of programs that are not looked on favorable. </p><p><br /></p><p>Before you buy&nbsp; ANY USB microscope consider a stereozoom microscope as you will eventually be disappointed with the USB. Yes, I have one and it has been in a box for 2 years now.&nbsp; IMO.</p><p>Jim[/QUOTE]</p><p><br /></p>

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