Alan Zinn <azinn@netbox.com> wrote/replied to: >>> i wonder if anyone has ever designed a patern of >>> stripes, colored squares >>> and other shapes, that can be printed in a big piece >>> of paper (couple of m2 >>> large), or painted on a wall, to be used as a >>> standard reference to be >>> photographed, and comparisons of lenses or films be >>> made >>> >>> would be great to use one, kostas >>> > >Guys, > >try here: http://www.scientificsonline.com/ > >I have the Air Force chart but didn't pay more than $20 for it as I recall. > >AZ from this page: http://www.normankoren.com/Tutorials/MTF5.html I quote this: "Edmund Optics has a line of lens test targets. Their 36x24 inch Resolving Power Chart NT83-001, illustrated on the right and based on the USAF 1951 test chart (below), sells for $18.95. Their other versions of the USAF 1951 Glass Slide Resolution Targets cost between $103 and $850. Ouch. " "The USAF 1951 lens test chart (on the right; Robert Monaghan's detailed printable PDF version) and its variants have been a standard for half a century." He goes on to mention other more modern lens test charts too. I downloaded that PDF and it should be useful. "take every day as a gift, never get angry at the idiotic mass of humanity, delight in the craftsmanship of BMW and nature" Jim Davis, 2002
