I just came across this interesting page, discussing design of various 85mm lenses produced by Asahi/Pentax in different mounts. http://www.taunusreiter.de/Cameras/Pentax_Takumar_85mm.html People might know this page, but it's the first time I see it. It gives interesting historical background related to the recent thread about design of Pentax 85mm lenses.
Here is the "main" Pentax page from this site: http://www.taunusreiter.de/Cameras/Pentax_main.html Igor
