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<p>[QUOTE=&quot;messydesk, post: 25502912, member: 1765&quot;]Magnification ratio refers to the size of the image on the sensor as compared to the size of the actual object.&nbsp; 1:1 means that they&#039;re the same size, 3:1 means that the image on the sensor is 3x life size.&nbsp; A full-frame sensor is 24x36 mm.&nbsp; With 1:1 magnification, a dime (17.9 mm) would fill 3/4 of the sensor vertically.&nbsp; This is plenty of magnification for full-coin pictures unless you&#039;re specializing in sceats and fanams.&nbsp; Most macro lenses sold focus to 1:1. Using a different size sensor doesn&#039;t change the magnification, only the amount of the object and its surroundings that is captured.[/QUOTE]</p><p><br /></p>

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