Hi there I'm currently planning to set up a focusing schlieren system as a project at my school. I'm using the technique andrew davidhazy describes on his website: http://www.rit.edu/~andpph/text-schlieren-focus.html My question is: Will this setup work with my Canon EOS / FD lenses ? What I have is : 50mm f/1.4 FD by Canon 50mm f/1.8 EOS by Canon 100mm f/3.5 by Vivitar 100-300mm f/4.5-5.6 by Canon Andrew says on his site: "It is desirable to use a large aperture, relatively long focal length lens for the imaging lens. Some surplus copier lenses can be applied for this purpose. " So I guess my 50mm lenses will not do the trick? Thanks in advance for any answers Frímann Kjerúlf
