[rollei_list] Re: 'Old' Zeiss glass question... HFT and T*
- From: Carlos Manuel Freaza <cmfreaza@xxxxxxxxxxxx>
- To: rollei_list@xxxxxxxxxxxxx
- Date: Thu, 27 Apr 2006 09:23:07 +0000 (GMT)
Marc, then I'll write to Zeiss asking why they have
false info in their web site from 2001, and I'll also
ask them why they dedicated one of their official news
bulletin to publish false info without any advantage
for them.
Rollei manufactured thousands and thousands of HFT
Sonnar lenses in Singapore, according Prochnow only a
few were manufactured in Germany for sample purposes,
but also they manufactured HFT lenses for the SL 35
and other Rollei cameras manufactured in Singapore.
Acoording Prochnow, Rollei manufactured 250,000 normal
Rollei 35 S cameras in Singapore with Sonnar lenses
("Rollei 35, a camera history", page 103) Prochnow
description: "Taking lens:40mm Sonnar f/2.8, Rollei
HFT coated, made by Rollei (Some samples made by Carl
Zeiss) Complete system shifts for focusing.Retractable
lens barrel"; these 250,000 cameras were manufactured
from September 1974 to December 1980.Rollei had
enormous factories in Singapore, they manufactured the
aluminium plates for the cameras, shutters, lenses and
cameras and projectors parts, they had 5,000 workers
in Singapore...
Regarding Asahi and Zeiss, I only could say that I
have used and use excellent Takumar and Pentax lenses
and that the SMC multicoating works right if
necessary, I knew that this SMC multicoating had
relationship with Zeiss.-
All the best
Carlos
--- Marc James Small <msmall@xxxxxxxxxxxx> escribió:
> At 01:29 AM 4/27/06 +0000, Carlos Manuel Freaza
> wrote:
> >Well, that was my original point Marc, that HFT and
> T*
> >are the same process, however the other point is
> that
> >Rollei developed with Zeiss the HFT to apply it for
> >the Zeiss lenses manufactured by Rollei in
> Singapore
> >under Rollei license as the Zeiss "Camera Lens News
> Nº
> >13, Spring 2001" explains... BYW, Prochnow says the
> >same thing in his book "Rollei 35, a camera
> history",
> >I don't think Prochnow could believe in hypes...
> >HFT is a process similar to Zeiss T* and
> Rollei_Zeiss
> >co-developed, Rollei own the HFT process it is not
> a
> >Zeiss license.-
>
> Carlos
>
> This just is not true. The Zeiss "T*" and Asahi SMC
> processes are
> identical ones developed jointly. When Rollei
> purchased Voigtländer, they
> were permitted to license the T* process but Zeiss
> refused to do any
> further development work, though they have a
> proprietary claim on such work
> as Rollei does in tweaking the formula for use on
> the lenses made at
> Braunschweig. (VERY few Singapore lenses were HFT,
> as production there was
> ramping down when HFT became available. I vaguely
> recall that the Sonnar
> on the 35S family might have been the only
> Singapore-produced Rollei lens
> with HFT, if these lenses were actually made in
> Singapore, and some
> argument exists about that.)
>
> In other words, it was not a "joint Zeiss-Rollei
> project" but a one-way
> street, with Rollei paying money to use a Zeiss
> process. To look at it
> another way, Zeiss is, with Canon, the largest
> optical firm in the world
> and has huge research facilities (whether Canon or
> Zeiss is larger depends
> on just how you are measuring things and just what
> you mean by "larger",
> but they are are the top two.) Rollei is a
> roller-skate of a company and a
> joint Zeiss-Rollei research project would be on the
> order of having Cal
> Tech embark on a "joint research project" with Penn
> Forest Elementary School.
>
> Marc
>
> msmall@xxxxxxxxxxxx
> Cha robh bàs fir gun ghràs fir!
>
>
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