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<p>[QUOTE=&quot;SuperDave, post: 2658941, member: 1892&quot;]Keep in mind, that shopping list also makes the stereoscope itself redundant - via Live View the camera itself becomes the &#039;scope and choosing to shoot is then a couple of mouse clicks. You view the coin on your monitor rather than through the eyepiece. Sensors are thermally protected, and there&#039;s no reason why one can&#039;t run them continuously for observation instead of just imaging. My older Rebel XS has turned Live View off on its&#039; own a couple times after about 90 minutes of continuous operation (most of that idle since it was only left on because I forgot <img src="styles/default/xenforo/clear.png" class="mceSmilieSprite mceSmilie1" alt=":)" unselectable="on" unselectable="on" /> ), although I don&#039;t know if that&#039;s thermally-related or just an internal timer.</p><p><br /></p><p>Caveats: With a duplicating lens sending no aperture information, one must raise the ISO setting for screen viewability and then reduce it for the shot, at least with my particular setup. I leave aperture and exposure where I&#039;ll want them to shoot, compose and focus at ISO1600 and then reduce to ISO100-200 for the shot. It only takes a couple of shots to learn what &quot;look&quot; on your screen translates to an appropriately-exposed shot for the purposes of choosing correct ISO. That&#039;s why I mention a &quot;few mouse clicks&quot; above instead of &quot;one mouse click.&quot;</p><p><br /></p><p>Additionally, varying magnification is a bit more complex than for a zooming &#039;scope (if that&#039;s what you employ) since one must vary bellows or extension length and refocus when changing magnification. That&#039;s where a bellows establishes itself as clearly superior to extensions. Duplicating lenses don&#039;t lend themselves to wide magnification ranges, although with anywhere from 10-24MP in hand depending on the camera, you won&#039;t need much optical magnification anyways. Not even a 4k monitor will display the entire coin at once on the screen....[/QUOTE]</p><p><br /></p>

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