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<p>[QUOTE="desertgem, post: 18660648, member: 15199"]I think that I have written at least 10 posts about this subject. Most with no optics knowledge use "Magnification " and "Resolution " as the same. Look at this image below:</p><p><br /></p><p>[ATTACH=full]1537946[/ATTACH] </p><p><br /></p><p>this what an Uncirculated surface of a Morgan Silver dollar looks like at 400X. I</p><p>took it using a 10X eyepiece and 40X objective lens. I had won a full scholarship to study Genetics and microbiology. After 6 years, I had used a Electron Microscope</p><p>over time in both areas.After going on research grants, I learned a Scanning electron Microscope ( Which I love as live structures can be used and not destroyed. </p><p> Resolution is how close ( microns or atomic wavelength level) 2 lines/ points can still be recognized as separated sharp lines. The same 2 lines can be used and with lens increase ( Magnify) the visual size not just 1000 times ( but the size of the moon if they had a strong enough light source. So much light information is lost at magnifications of 500X on a lens scope, that the image will not be sharp or accurate, unless the object is contact with immersion oil to bend the light back. Microbiology students have to use it between their 1000X lab scopes and the microorganisms on a slide.</p><p><br /></p><p>So the numbers of 1000X used by the offshore manufacturers is strictly "Size" and not accuracy of what is there. The scopes sold on Amazon and elsewhere will never explain it . As magnification goes up on these types of scope, the resolution goes down. The small significant thing you are looking for, may be fuzzed out. Using a larger screen image ( used for extra magnification) is even worse , as the screen is assuredly not a high pixel level, but usually 720 to 1040, ( low resolution) claims 1500X magnification and the inverse in resolution. </p><p> Why so many people put up photos that are large, but not sharp. Not trying to say you need $500 to do well, as a well made , highly accurate , optic glass lens , such as used by jewelers, miners, medical , under $50 etc. is often better for coin collectors. If you sent the camera signal to a 70 inch screen, it would be magnified greatly, but the resolution ( accurate information of what is actually there) will deteriorate. IMO.</p><p><br /></p><p>Astronomy cameras for telescopes are similar to look for things similar in context to coin searchers, are far more accurate, and far more expensive. </p><p><br /></p><p>Just to complete below is a similar observation of the surface of a UNC Peace dollar to the Morgan[ATTACH=full]1537964[/ATTACH] . Not the same "peaks", thus less natural toning refraction.</p><p><br /></p><p>Jim[/QUOTE]</p><p><br /></p>
[QUOTE="desertgem, post: 18660648, member: 15199"]I think that I have written at least 10 posts about this subject. Most with no optics knowledge use "Magnification " and "Resolution " as the same. Look at this image below: [ATTACH=full]1537946[/ATTACH] this what an Uncirculated surface of a Morgan Silver dollar looks like at 400X. I took it using a 10X eyepiece and 40X objective lens. I had won a full scholarship to study Genetics and microbiology. After 6 years, I had used a Electron Microscope over time in both areas.After going on research grants, I learned a Scanning electron Microscope ( Which I love as live structures can be used and not destroyed. Resolution is how close ( microns or atomic wavelength level) 2 lines/ points can still be recognized as separated sharp lines. The same 2 lines can be used and with lens increase ( Magnify) the visual size not just 1000 times ( but the size of the moon if they had a strong enough light source. So much light information is lost at magnifications of 500X on a lens scope, that the image will not be sharp or accurate, unless the object is contact with immersion oil to bend the light back. Microbiology students have to use it between their 1000X lab scopes and the microorganisms on a slide. So the numbers of 1000X used by the offshore manufacturers is strictly "Size" and not accuracy of what is there. The scopes sold on Amazon and elsewhere will never explain it . As magnification goes up on these types of scope, the resolution goes down. The small significant thing you are looking for, may be fuzzed out. Using a larger screen image ( used for extra magnification) is even worse , as the screen is assuredly not a high pixel level, but usually 720 to 1040, ( low resolution) claims 1500X magnification and the inverse in resolution. Why so many people put up photos that are large, but not sharp. Not trying to say you need $500 to do well, as a well made , highly accurate , optic glass lens , such as used by jewelers, miners, medical , under $50 etc. is often better for coin collectors. If you sent the camera signal to a 70 inch screen, it would be magnified greatly, but the resolution ( accurate information of what is actually there) will deteriorate. IMO. Astronomy cameras for telescopes are similar to look for things similar in context to coin searchers, are far more accurate, and far more expensive. Just to complete below is a similar observation of the surface of a UNC Peace dollar to the Morgan[ATTACH=full]1537964[/ATTACH] . Not the same "peaks", thus less natural toning refraction. Jim[/QUOTE]
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