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<p>[QUOTE=&quot;desertgem, post: 1581538, member: 15199&quot;]The facts of optics work whether the lens is 1/4 inch or 6 inches. If it is a single lens, it is just a large magnifying glass with the distortion that would normally see. Some smaller ones like being discussed are triplet ( 3 glass piece designed to eliminate linear and color distortion) but these are more expensive and heavier than the simplex. A good triplet loupe or hand magnifier will give better performance ( especially in the error/variety group) and is much more than portable. Some also have light attachments. Take a coin with you and look at it carefully , especially the date ,mint mark, etc.&nbsp; and move the coin slightly and see what the image does.</p><p><br /></p><p>LEDs are easier to locate and use, but the light is sometimes too directional, making small scratches and defects seem major, so if photographing, incandescent lights still work best for me, or a mix of the 2.</p><p><br /></p><p>Jim[/QUOTE]</p><p><br /></p>

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