There is very little point in testing at f/22. All lenses perform poorly at this aperture because of the diffraction problem, and most lenses perform very similarly here. You would be better off testing at apertures from wide open to f/11, and then just realize that f/16 and f/22 isn't going to provide results that are very good in comparison to the other apertures. Sometimes the tradeoff for the DOF is useful though.
Mike Miha Valencic wrote: > > Hi! > > You don't need to test at all appertures that you stated. Just test @ wide > open, f/8 and f/22. The target should both black and white (with crossing > lines) and color squares, where you see color abberation and compare > contrast. For the film, use neutral slide film, not a highly saturated one > (Kodak VS or similar). > > Tripod, etc, as you stated... Let us know of the results! ************************************ -- Michael Shupe M.J.Shupe Photography Michigan Tech University www.northernlightsgallery.com * **** ******* *********************************************************** * For list instructions, including unsubscribe, see: * http://www.a1.nl/phomepag/markerink/eos_list.htm ***********************************************************
