Archived posting to the Leica Users Group, 2000/08/18
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]I do not doubt it - but my Summilux 35 from 1976 does not have multicoating - so what was multicoated in 1957? The Pentax multicoating has 7 layers and Fuji EBC has 11 layers so there is a difference. And I "believe" that Optical Coating Laboratory Inc. was needed to make multicoating commercially viable and they had some important patents. All the best! Raimo photos at http://personal.inet.fi/private/raimo.korhonen - -----Alkuperäinen viesti----- Lähettäjä: Henning J. Wulff <henningw@archiphoto.com> Vastaanottaja: leica-users@mejac.palo-alto.ca.us <leica-users@mejac.palo-alto.ca.us> Päivä: 18. elokuuta 2000 21:16 Aihe: Re: Vs: [Leica] M-Rokkor story >At 7:04 PM +0200 8/18/00, Raimo Korhonen wrote: >>Do you believe in all legends? Multicoating was definitely jointly >>productionised by Zeiss and Pentax and an unknown American company called >>Optical Coating Laboratory Inc. - after some years Leitz obtained a >>licence. The idea itself is about 100 years old. >>All the best! >>Raimo >>photos at http://personal.inet.fi/private/raimo.korhonen > >As Erwin wrote, Leica started coating some lenses with up to 3 layers in >1957. One of the first lenses to have this 'multi' layer coating was the >35/1.4 Summilux. In the Pentax PR way of thinking, this was not >'multi-coating' and especially not 'Super Multi-Coating'. Various >companies, definitely including the American company mentioned and Zeiss >were working on multi-layer coatings, but just as definitely Leica had >multi-layer coatings in production before Pentax did. > > * Henning J. Wulff > /|\ Wulff Photography & Design > /###\ mailto:henningw@archiphoto.com > |[ ]| http://www.archiphoto.com