Comments on: Opteka 500mm f/8 Preset Telephoto Lens for Canon EOS 50D, 40D, 30D, 20D, 5D, Digital Rebel XT, XTi, XSi, XS, & T1i Digital SLR Cameras

Comments on: Opteka 500mm f/8 Preset Telephoto Lens for Canon EOS 50D, 40D, 30D, 20D, 5D, Digital Rebel XT, XTi, XSi, XS, & T1i Digital SLR Cameras http://rationalscope.com/telephoto-lens/opteka-500mm-f8-preset-telephoto-lens-for-canon-eos-50d-40d-30d-20d-5d-digital-rebel-xt-xti-xsi-xs-t1i-digital-slr-cameras/ Rational Microscopes, Telescopes and Binoculars hourly 1 http://wordpress.org/?v=3.1