[rollei_list] Re: Rollei 35S, SE

  • From: "Eric Goldstein" <egoldste@xxxxxxxxx>
  • To: rollei_list@xxxxxxxxxxxxx
  • Date: Wed, 3 Oct 2007 08:22:45 -0400

I'll have to recheck Kingslake... from memory I think he diagrams the
lens as a 7 element double-gauss, similar to the much heralded
Summicron when first introduced in the early 50s. As an uncoated
pre-war lens, that would be many many glass-air surfaces... Kodak must
have known lens coatings were just around the corner...


Eric Goldstein

--

On 10/3/07, Richard Knoppow wrote:

>      FWIW, this lens (47/2) was the first to bear the name Ektar.
> It was designed in 1936 for the Kodak Bantam Special. I
> think it may also have been the first Kodak lens to have a
> rare-earth glass element. I don't know if it was the same
> lens supplied for the Kardan camera but it seems reasonable.
> I think the patent for this lens may be in LensView, I will
> have to look. Its difficult to be sure any particular lens
> patent is for a production lens but sometimes you can tell
> pretty well. The patent would tell what kind of glasses were
> used.
>
> ---
> Richard Knoppow
> Los Angeles, CA, USA
> dickburk@xxxxxxxxxxxxx
---
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