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<p>[QUOTE=&quot;SuperDave, post: 2535730, member: 1892&quot;]Depends on what attachment thread comes with the lens. It&#039;s very likely M39 (Leica) or M42 (Pentax) threads, meaning you&#039;ll need an adapter. Either way, it will not function automatically; the camera won&#039;t &quot;see&quot; the lens so you&#039;ll be working manually, adjusting aperture at the lens and all other settings in-camera. Further, you&#039;ll need some sort of equipment with which to set magnification (bellows, spacers, etc.) and focus (focusing rail, helicoid).</p><p><br /></p><p>This is the price those of us who use duplicating lenses for imagery have to pay - needing to learn the nuts and bolts of photography in detail. <img src="styles/default/xenforo/clear.png" class="mceSmilieSprite mceSmilie1" alt=":)" unselectable="on" unselectable="on" /></p><p><br /></p><p><br /></p><p><br /></p><p>Aperture is kind of forced upon you mathematically by diffraction - you use the smallest (numerically largest) aperture number which keeps your particular camera out of diffraction. ISO is always best set at the lowest number you can still achieve a reasonable exposure with, which itself depends on how steady your mount is; with a good solid mount and careful technique you can go as slow as 1/8 or even longer. In the coin photography niche, we create a final product which easily shows the slightest of noise caused by higher ISO.</p><p><br /></p><p>Then, as Ray mentions, you use Aperture Priority and let the camera do what it can for you. Me, I usually use full Manual operation, because I&#039;ve run into situations (especially with darker/circulated copper) where I prefer a different exposure than the camera chooses to get closer to the &quot;in-hand&quot; look (usually a faster exposure than the camera wants). But either way Exposure is the only setting which is really a &quot;variable&quot; in the process.</p><p><br /></p><p>Poor time for this information to show up; no lenses in my budget this week. <img src="styles/default/xenforo/clear.png" class="mceSmilieSprite mceSmilie1" alt=":)" unselectable="on" unselectable="on" />[/QUOTE]</p><p><br /></p>

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