Archived posting to the Leica Users Group, 1999/10/23

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Subject: Re: [Leica] RE: Thou insulteth Takumar, Sir?
From: "Ken Iisaka" <kiisaka@ibm.net>
Date: Sat, 23 Oct 1999 09:40:07 -0700

Minolta had marketted "achromatic coating" in the late 50's when its first
SLR, SR-2, was introduced.

It had two-layer coating, and its dark green reflection was quite unique at
the time.

- -----Original Message-----
>From: Mike Johnston [mailto:michaeljohnston@ameritech.net]
>Sent: Wednesday, October 20, 1999 11:13 AM
>To: leica-users@mejac.palo-alto.ca.us
>Subject: [Leica] Thou insulteth Takumar, Sir?
>Dan, the Takumar in question is a used lens, more than 25 years old. It
>is well built. It focuses more smoothly than any other lens I have ever
>used, including any Leica or Zeiss lens. It has spherical surfaces where
>other 50/1.4's have flat surfaces; it was among the first lenses on the
>market with multicoating. Pentax beat even Zeiss's first multicoated
>lens to market. In the late '60s and early '70s both Zeiss and Pentax
>were working with Optical Coating Laboratories (? I have a poor memory
>for descriptive names), which invented multicoating for the space
>program. Every surface is fully multicoated, not often the case on many
>lenses today. I don't know when Leitz's first multicoated lens came to
>market, but Nikon's first was the 35mm f/1.4 in I believe 1977, some 5
>years later.