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<p>[QUOTE=&quot;rmpsrpms, post: 2535723, member: 31773&quot;]I have not done a direct compo with the 75ARD1 yet, but my impressions so far are favorable. The 75ARD1, while labeled an Apo, is really a very well-corrected achromat. I don&#039;t worry much about the small amount of LoCA in the 75ARD1, but I shoot mostly copper, and the small color shifts are often obscured by the strong red color of BU Cents. Where the shifts are most noticeable is on fresh, untoned silver. Tiny amounts of red and green shifts can be seen on the 75ARD1, while I don&#039;t see any on the 89PE (or the 95PN / 105PN). </p><p><br /></p><p>My next step is to post some higher mag shots, and then I&#039;ll compare with the 75ARD1. </p><p><br /></p><p>A couple more things about this lens...</p><p><br /></p><p>First, it&#039;s small, only 34mm diameter at front and back. This makes lighting a little easier.</p><p><br /></p><p>Second, the longer focal length gives more working distance, and is more forgiving of bellows minimum extension. This makes it easier to set up for larger coins.[/QUOTE]</p><p><br /></p>

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