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<p>[QUOTE=&quot;desertgem, post: 1540208, member: 15199&quot;]Two of the devices mentioned above have a 2-3 mp camera sensor, and the other a 5mp sensor( according to Amazon). The 540 only has optica;l zoom to 17X and then digital to 500X which is just crops . but doesn&#039;t increase the pixels. When the photo ( such as you might post here )gets above 600x800 ( approx. 5mp for whole photo) you will get fuzzy images.</p><p><br /></p><p>Magnification on these microscopes mean nothing. Magnifying fuzz 200X give 200X larger fuzz.&nbsp; Resolving power ( resolution) or how close 2 lines can be separated and seen as 2 lines rather than 1 fuzzy one.&nbsp; The Am-scope has fair resoltuion, but a 2mp camera won&#039;t give you the image you need for grading or varieties. Good microscopes like good cameras are expensive. The AM-scope can be better by shooting with a point and shoot camera with practice and macro setting , through the eyepiece.&nbsp; All optical laws limit the size, light,depth of field, etc. ,so it is hard to get a&nbsp; unit that can photo a half dollar @ 10X or a cent @ 30 X and be sharp. </p><p><br /></p><p>One should ask : How much can I spend for this.</p><p>&nbsp;&nbsp;&nbsp; How long will I need to use it ( 2 yrs, 5 yrs, 30 yrs or more.) spread the cost over these years.</p><p>&nbsp;&nbsp;&nbsp; Do I need eyeglasses now?&nbsp; If under 40 , get the best you can afford as your eyes will probably get worse.</p><p>&nbsp;&nbsp;&nbsp; Is one eye much better than the other ( even with glasses) If so get a binocular microscope with adjustable diopter on one eyepiece, so you can set the microscope up for using both eyes without glasses and eliminate the killer headaches.</p><p>&nbsp;&nbsp;&nbsp; Since coins aren&#039;t transparent, you will need a over stage light rather than one under the stage.</p><p><br /></p><p>&nbsp;&nbsp;&nbsp; Good news~ with the decrease in electronic assembly ( more robots), used inspection microscopes&nbsp; have appeared on the market. </p><p><br /></p><p>If the microscope you have is all you can afford , or if it serves your purchase, that works out great, but most people realize the magnification, but not the resolution.</p><p><br /></p><p>Jim[/QUOTE]</p><p><br /></p>

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