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<p>[QUOTE="dougsmit, post: 2424123, member: 19463"]Good work! I still maintain that it i easier to shade the background when shooting than to do the paint out being careful not to cut into the edge of the coin. That is why I have that tube of black foam around my dowel (cd spindle in your case).</p><p><img src="http://www.pbase.com/dougsmit/image/160721449.jpg" class="bbCodeImage wysiwygImage" alt="" unselectable="on" /> </p><p><br /></p><p>While my main rig has adjustments from use of an old enlarger frame I have had for 50 years (Durst M600), the idea of the wood frame is added stability. If your was wobbly, you used too small wood. There is nothing wrong with 2x4" but I used scraps of oak flooring just because I had them. </p><p><img src="http://www.forumancientcoins.com/dougsmith/0bbnewrack00.jpg" class="bbCodeImage wysiwygImage" alt="" unselectable="on" /></p><p><br /></p><p>The whole idea of the wood stand is to <b>not</b> be adjustable. Adjustments are made by having more than one size cd spindle or placing spacers under the one you have. Books work.</p><p><img src="http://www.forumancientcoins.com/dougsmith/0pns02.jpg" class="bbCodeImage wysiwygImage" alt="" unselectable="on" /></p><p><br /></p><p>If you must have adjustability as I wanted for my super close rig, consider a focus rail as shown below. Mine is a cheap Chinese one from ebay (4 way macro focussing rail) but you can spent a few hundred on ones with better machine finish. It is not necessary for normal whole coin shooting.</p><p>[ATTACH=full]502716[/ATTACH] </p><p><img src="http://i.ebayimg.com/images/g/hIEAAOxydlFS~uiD/s-l500.jpg" class="bbCodeImage wysiwygImage" alt="" unselectable="on" /></p><p><br /></p><p>The above image shows use of both extension tubes and bellows for close focus. To focus closer, you just need to move the lens farther from the 'film'. 10mm gets you close, 16mm closer and 26mm even closer. I own enough various extension devices to focus on the front glass of the lens which is totally useless. A dedicated macro lens like the 100mm Canon I use gets you no closer. It is just more convenient to use and the optics of the lenses in this class tend to be excellent. You can add tubes to a macro lens. Another recent thread here showed an Aegina obol shot with 68mm worth of extension tubes on the 100mm macro. You can get carried away if you choose. </p><p><br /></p><p>If I were to suggest a camera rig with price being no object and impressing the neighbors being of prime importance, I would get a full frame dSLR like the Canon 5DmkIII with a 180mm macro lens (Sigma or Canon) and at least one set of Kenko macro extension tubes. I'd mount this on a wood frame made of exotic hardwoods for impressing people or Home Depot 2x4" pine for stability (select straight ones). There is no metal stand as strong as a well made wood one because metal vibrates much worse than wood. </p><p><br /></p><p>Did I mention that you can get carried away on this. The difference between a great camera and great lens and a regular dSLR is real and can be seen on large images. Of course few of my coins really need to be blown up to 20x30 inches (larger is possible but I have not done that yet. It may be a lot like being obsessive about the difference between MS68 and MS69 coins and the costs involved go up in a similar manner. Photo is a hobby. Some practitioners are prone to excess. I enjoy my excesses.[/QUOTE]</p><p><br /></p>
[QUOTE="dougsmit, post: 2424123, member: 19463"]Good work! I still maintain that it i easier to shade the background when shooting than to do the paint out being careful not to cut into the edge of the coin. That is why I have that tube of black foam around my dowel (cd spindle in your case). [IMG]http://www.pbase.com/dougsmit/image/160721449.jpg[/IMG] While my main rig has adjustments from use of an old enlarger frame I have had for 50 years (Durst M600), the idea of the wood frame is added stability. If your was wobbly, you used too small wood. There is nothing wrong with 2x4" but I used scraps of oak flooring just because I had them. [IMG]http://www.forumancientcoins.com/dougsmith/0bbnewrack00.jpg[/IMG] The whole idea of the wood stand is to [B]not[/B] be adjustable. Adjustments are made by having more than one size cd spindle or placing spacers under the one you have. Books work. [IMG]http://www.forumancientcoins.com/dougsmith/0pns02.jpg[/IMG] If you must have adjustability as I wanted for my super close rig, consider a focus rail as shown below. Mine is a cheap Chinese one from ebay (4 way macro focussing rail) but you can spent a few hundred on ones with better machine finish. It is not necessary for normal whole coin shooting. [ATTACH=full]502716[/ATTACH] [IMG]http://i.ebayimg.com/images/g/hIEAAOxydlFS~uiD/s-l500.jpg[/IMG] The above image shows use of both extension tubes and bellows for close focus. To focus closer, you just need to move the lens farther from the 'film'. 10mm gets you close, 16mm closer and 26mm even closer. I own enough various extension devices to focus on the front glass of the lens which is totally useless. A dedicated macro lens like the 100mm Canon I use gets you no closer. It is just more convenient to use and the optics of the lenses in this class tend to be excellent. You can add tubes to a macro lens. Another recent thread here showed an Aegina obol shot with 68mm worth of extension tubes on the 100mm macro. You can get carried away if you choose. If I were to suggest a camera rig with price being no object and impressing the neighbors being of prime importance, I would get a full frame dSLR like the Canon 5DmkIII with a 180mm macro lens (Sigma or Canon) and at least one set of Kenko macro extension tubes. I'd mount this on a wood frame made of exotic hardwoods for impressing people or Home Depot 2x4" pine for stability (select straight ones). There is no metal stand as strong as a well made wood one because metal vibrates much worse than wood. Did I mention that you can get carried away on this. The difference between a great camera and great lens and a regular dSLR is real and can be seen on large images. Of course few of my coins really need to be blown up to 20x30 inches (larger is possible but I have not done that yet. It may be a lot like being obsessive about the difference between MS68 and MS69 coins and the costs involved go up in a similar manner. Photo is a hobby. Some practitioners are prone to excess. I enjoy my excesses.[/QUOTE]
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