[rollei_list] Re: Fw: Re: Re: 'Old' Zeiss glass question

At 12:47 PM 4/28/06 -0500, Peter J Nebergall wrote:
>
>
>-NOT exactly what I meant.  Was the uncoated Sonnar 50mm 1.5 produced
>alongisde the coated one?  Were the Rollei Tessars produced concurrently,
>or does the1 replace the other?
>
>PJN
>
>This begs a question:  If Zeiss was producing coated lenses since 1937,
>were they simultaneously continuing uncoated lenses in the same formulae?
> I have 2 Contax Sonnar f1.5s  and 2 more f2s...  1 of each is coated. 
>When did they stop making uncoated lenses?

Almost all Zeiss lens production was uncoated through the War and some
afterwards.  By 1950 or so, almost all photographic lenses were coated
though uncoated lenses could be purchased for special uses such as
surveillance work.  Prewar production was of only a few lenses per batch
and was done for testing purposes in the marketplace and at least some of
these lenses were sold in the US.  Coated camera lenses made during the War
were sold in Sweden and Switzerland and Spain and Portugal, these being the
only nations with whom Germany was still able to trade!

So, yes, uncoated and coated lens production continued in parallel.

Marc

msmall@xxxxxxxxxxxx 
Cha robh bàs fir gun ghràs fir!


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