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<p>[QUOTE=&quot;geekpryde, post: 1934342, member: 36248&quot;]Depends on if you are DX or FX (Canon calls it something else, <a href="http://digital-photography-school.com/full-frame-sensor-vs-crop-sensor-which-is-right-for-you/" target="_blank" class="externalLink ProxyLink" data-proxy-href="http://digital-photography-school.com/full-frame-sensor-vs-crop-sensor-which-is-right-for-you/" rel="nofollow">see here for more</a>)</p><p><br /></p><p>So, on my DX 105mm really = 157.5, so that is not wildly different than someone using a 200mm on a FX.&nbsp;&nbsp; But the 157.5 is really very close at ~10 inches from coin, so really in my opinion this lens focal length is plenty, and from all the lenses I&#039;ve tested, is basically a perfect coin lens for the Nikon shooter.&nbsp;&nbsp; But I have<u> not</u> tested anything with a &gt; 160mm macro, so I cant say for sure.</p><p><br /></p><p>The lens does focus very slightly coin-to-coin, and even very small changes can make a big difference, for instance scratches on slabs can be a very big nuisance.&nbsp; If you go to f11+, you really start seeing all these scratches show up in the photos.&nbsp; To some extend, 5.6-f8 lets you focus past those scratches.&nbsp;&nbsp; So you keep a shallow-er DOF than you might think, and be more anal about the focus.</p><p><br /></p><p>Even micro adjustments such as the previously mentioned AF-fine-tune can make a big difference, camera to camera, and lens to lens.[/QUOTE]</p><p><br /></p>

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