"Hugo Lopes" <[EMAIL PROTECTED]> wrote: > Pawel Nabe wrote: > > Well one of Germany's magazines just tested the 400mm/4.0 DO and came > > to the conclusion that it does not get better with stopping down. > > Does this mean that every single lens is different? > > > According to Chasseur D'Images (or was it Reponses Photo?) the lens > assembly of diffractive optics requires a micron tolerance! If this is > true, it could account for some differences between different lenses and > the high price tag of the lens.
Does this then mean that the performance of the lense might depend on the temperature? -- Pawel Nabe Business: +49 / 30 / 245 54 920 PaN Super Sonic Software Service Private: +49 / 30 / 447 33 452 expert for hi tech & low budget Mobile: +49 / 171 / 267 54 63 * **** ******* *********************************************************** * For list instructions, including unsubscribe, see: * http://www.a1.nl/phomepag/markerink/eos_list.htm ***********************************************************
