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<p>[QUOTE=&quot;EyeEatWheaties, post: 1052651, member: 26972&quot;]This may not be a realistic question however it never hurts to ask? I have narrowed down my search to 3 lens.&nbsp; all 3 fit into my price range - that shouldn&#039;t affect your opinion.&nbsp; All have general rave reviews. Now I need to hear from those who have experience with these lens - hopefully someone has experience with all 3 ! </p><p><br /></p><p>I am using a coin dedicated Canon 40D tethered to my computer. After experimenting with 5 different lenses, I am getting the best results from a tube extended Nikor 35-70mm adapted to fit my Canon. I manually focus and then use the crank on my copy stand to fine tune the resolution.</p><p><br /></p><p>I want a lens that a penny will fill the frame without using extension tubes I also want a lens that I can control from the computer.</p><p><br /></p><p>These are my Macro 3 choices: Which one would you pick and why?</p><p><br /></p><p>1. <b>Canon Telephoto EF 100mm f/2.8 USM Macro Autofocus Lens</b>&nbsp; B&amp;H @ $519 (chose because it is Canon but I think it I wont have room for lighting) Link <a href="http://www.bhphotovideo.com/bnh/controller/home?O=productlist&amp;sku=194451&amp;is=USA&amp;A=details&amp;Q=" target="_blank" class="externalLink ProxyLink" data-proxy-href="http://www.bhphotovideo.com/bnh/controller/home?O=productlist&amp;sku=194451&amp;is=USA&amp;A=details&amp;Q=" rel="nofollow">http://www.bhphotovideo.com/bnh/controller/home?O=productlist&amp;sku=194451&amp;is=USA&amp;A=details&amp;Q=</a></p><p><br /></p><p>2. <b>Sigma Telephoto 150mm f/2.8 EX APO Macro EX DG HSM Autofocus Lens for Canon EOS</b>&nbsp; B&amp;H @ 729 (you get what you pay for?) Link <a href="http://www.bhphotovideo.com/c/product/352422-USA/Sigma_104101_150mm_f_2_8_EX_APO.html" target="_blank" class="externalLink ProxyLink" data-proxy-href="http://www.bhphotovideo.com/c/product/352422-USA/Sigma_104101_150mm_f_2_8_EX_APO.html" rel="nofollow">http://www.bhphotovideo.com/c/product/352422-USA/Sigma_104101_150mm_f_2_8_EX_APO.html</a></p><p><br /></p><p>3. <b>Tamron Telephoto SP AF 180mm f/3.5 Di LD IF Macro Autofocus Lens for Canon EOS</b>&nbsp; B&amp;H @ $639 (have to send in rebate - I will need to build a new bigger sturdier copy stand - this one will allow the most room for lighting flexibility) Link <a href="http://www.bhphotovideo.com/c/product/284404-REG/Tamron_AFB01C700_180mm_f_3_5_Macro_Autofocus.html" target="_blank" class="externalLink ProxyLink" data-proxy-href="http://www.bhphotovideo.com/c/product/284404-REG/Tamron_AFB01C700_180mm_f_3_5_Macro_Autofocus.html" rel="nofollow">http://www.bhphotovideo.com/c/product/284404-REG/Tamron_AFB01C700_180mm_f_3_5_Macro_Autofocus.html</a>[/QUOTE]</p><p><br /></p>

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