They tested lenses against their design specifications. Not the designs themselves...
mike wilson wrote: > J. C. O'Connell wrote: > > >> Nobody came up with the answer to my quiz why >> the Pentax Takumar Screw mount lenses were/are all >> so good? >> >> Answer : They were 200% optical bench tested >> before being sold in USA. Thats right, 200%. >> >> Every single final assembled Takumar Lens >> was optically bench tested at the Asahi >> factory in Japan before being imported into >> the USA by Honeywell. THEN, once Honeywell >> got them, Every single lens was optically bench tested AGAIN >> by Honeywell before being put for sale in >> USA. This is why ( along with the superb build >> quality ) there is such consistant high optical quality for these >> lenses as the dogs were all rejected in the process. >> > > How did the 20mm(?) (alleged) Bow-wow get through that? > > >> I doubt that many lenses today are subjected to >> such high quality control. I am sure expensive >> ones still are, but not the entire lens series. >> It would be way too costly in today's market I would >> especially when the build quality of many lenses >> ( especially budget models ) would create more rejects. >> >> This brings up another thought, wouldnt it have been >> cool to work in that test dept and have a company >> discount to purchase the lenses? I mean, if a given >> lens had to meet say, 75 lp/mm to pass test, and they >> typically ran say, 80 to 85 lp/mm, what would be cool >> would be to sit aside and buy the occasional 90 to 95 lp/mm >> lens that might have squeaked thru once in a while. >> Employees get to buy the "gems" so to speak! I wonder if this actually >> occured, or maybe Pentax or Honeywell permitted it? That >> would interesting to find out. >> >> jco >> >> >> >> >> >> >> >> > > > -- -- The more I know of men, the more I like my dog. -- Anne Louise Germaine de Stael -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net