Archived posting to the Leica Users Group, 2001/01/07
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]It could - because apochromatic correction has nothing to do with spectral transmission - APOs just correct the 3 primary colours to same plane. All the best! Raimo Personal photography homepage at http://personal.inet.fi/private/raimo.korhonen - -----Alkuperäinen viesti----- Lähettäjä: Martin Howard <howard.390@osu.edu> Vastaanottaja: leica-users@mejac.palo-alto.ca.us <leica-users@mejac.palo-alto.ca.us> Päivä: 07. tammikuuta 2001 3:52 Aihe: Re: [Leica] 90mm recommendations: Apo-Lanthar question >Rob McElroy jotted down the following: > >> Do you know if the new Voigtlander 90mm/f3.5 Apo-Lanthar is using the >> lanthanum glass that the original 1960's large format Apo-Lanthar lenses used? >> The sharpness and contrast of these large format lenses is quite legendary but >> they have a distinct yellow cast, easily visible when looking through the >> lens. > >Could someone please explain to me how a supposedly apochromatically >corrected lens managed to throw a yellow cast on everything it puts on the >film? > >M. > >-- >Martin Howard | "Ice cubes would melt in her mouth. >Visiting Scholar, CSEL, OSU | That's how cold she was." >email: howard.390@osu.edu | -- Radio ad for new TV show. >www: http://mvhoward.i.am/ +--------------------------------------- > >