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<p>[QUOTE=&quot;EyeEatWheaties, post: 1106657, member: 26972&quot;]I have already decided on buying and trying the Tamron 150mm&nbsp;&nbsp; I have some other work to do first.&nbsp; I need to build a copy stand worthy&nbsp; -&nbsp; Thinking about a drill press column that cranks the table up and down with integral lighting.&nbsp; The 180mm puts the minimum distance to subject at about 20&quot; which seems to much..</p><p><br /></p><p>I also want to understand the the new sensors at 19mm and 24 mm tall. However I just recently found out the smaller sensors like whats in my 40d have the better pixel density and that the new sensors wer created for a larger field of view.&nbsp; I don&#039;t know how that translates to macro imaging. </p><p><br /></p><p>Here is where I am at with that whole learning curve.&nbsp; </p><p><br /></p><p><a href="http://www.sphoto.com/techinfo/dslrsensors/dslrsensors.htm" target="_blank" class="externalLink ProxyLink" data-proxy-href="http://www.sphoto.com/techinfo/dslrsensors/dslrsensors.htm" rel="nofollow">http://www.sphoto.com/techinfo/dslrsensors/dslrsensors.htm</a>[/QUOTE]</p><p><br /></p>

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