In the case of Leitz 3.5-4.5/28-79 Vario-Elmar R it was a Sigma design made by Sigma - according to Leica Lens Compendium by Erwin Puts. As to the Cosina-Pentax link it is pure speculation by myself (and some others) based on the outward appearance of the lenses and one observation of a person´s behaviour who has actually been inside the Cosina plant (he declined to comment). Pål will emphatically deny this and he has been right before. The vast majority of Pentax lenses is made by Pentax but like we all know there are exceptions. Whether Pentax has a hand in the design and/or manufacture of these lenses is anybody´s guess. All the best! Raimo Personal photography homepage at http://www.uusikaupunki.fi/~raikorho
-----Alkuperäinen viesti----- Lähettäjä: gfen <[EMAIL PROTECTED]> Vastaanottaja: [EMAIL PROTECTED] <[EMAIL PROTECTED]> Päivä: 12. marraskuuta 2002 17:32 Aihe: Re: Vs: OT: Is BOKEH real?!?! Was -- Re: If You had to pick one lens.. . >On Tue, 12 Nov 2002, Raimo Korhonen wrote: >> And I still have a suspicion that the Pentax limiteds may be made by Cosina. > >Interesting. I presumed Ashahi had its own lens plant... > >In a situation like the above, who does what? >Who designs the actual optical charactoristics of teh lens? >Who builds the prototypes? The regular line? >Who quality controls, and where does the coating come in? > >IE, is it the design and prototype would be done by Pentax, or Leitz, or >whomever, then given to Cosina/Sigma/etc for mass production? Does it go >back to the mother company to have coatings applied, or do Cosina have >their own machines do it to the Pentax spec? > >-g. > >
