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<p>[QUOTE=&quot;desertgem, post: 3985399, member: 15199&quot;]These USB microscopes use very low level resolution cameras ( 1.9 megapixels)&nbsp; (check on the resolution of a cell phone 10 years ago and its camera is better. </p><p><br /></p><p>Also from&nbsp;&nbsp; <a href="https://www.bhphotovideo.com/c/product/1106421-REG/carson_mm_840_eflex_75_300x_led_light.ht" target="_blank" class="externalLink ProxyLink" data-proxy-href="https://www.bhphotovideo.com/c/product/1106421-REG/carson_mm_840_eflex_75_300x_led_light.ht" rel="nofollow">https://www.bhphotovideo.com/c/product/1106421-REG/carson_mm_840_eflex_75_300x_led_light.ht</a></p><p><br /></p><p>&quot;At the core of the device is a 1.9MP CMOS imager, capable of capturing 1600 x 1200 images and 640 x 480 videos and delivering them to your computer via a USB cable. <span style="color: #0000ff">The magnification of the resulting images is dependent on the size of your monitor and scales at 3.6 - 14.3 times the size of your monitor in inches. For example, a 21&quot; monitor will give you 75 - 300x magnification, while a 32&quot; television screen will produce a 114 - 457x magnification&quot;</span></p><p><span style="color: #0000ff"><br /></span></p><p><span style="color: #0000ff"><span style="color: #000000">There is a difference in resolution ( how close 2 points can be to each other and seen as 2 objects rather than 1 blurry one) and magnification ( how big physically it is by their definition). This company is honest enough to say all of this, but most people won&#039;t understand the limitations.</span></span></p><p><br /></p><p><span style="color: #0000ff"><span style="color: #000000">The photo below shows the surface of a mint silver dollar @ 100X ( morgan on left, peace on right)&nbsp; from a thread on toning and refraction. On the USB you will not see this as the resolution is too low</span></span></p><p><br /></p><p><br /></p><p><span style="color: #0000ff"><span style="color: #000000">[ATTACH=full]1049362[/ATTACH]</span></span></p><p><br /></p><p><span style="color: #0000ff"><span style="color: #000000">[ATTACH=full]1049375[/ATTACH] </span></span></p><p><span style="color: #0000ff"><span style="color: #000000">&nbsp; </span></span>This is the Morgan surface to show the flow lines and the reflective surfaces at 400X. </p><p><br /></p><p>USB camera are Ok for whole coin photos, but for varieties their pixelation often shows abnormalities that are not true images and make it difficult to discern true ones. </p><p><br /></p><p>Not trying to dump on people, as I know they are inexpensive and our brains does a lot of wetware &#039;photoshop&#039; when we look at it, but for new users that get upset when they say they see it, and no one else can , it is an explanation.</p><p><br /></p><p>IMO,&nbsp; Jim[/QUOTE]</p><p><br /></p>

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