TOP RUMOR ANTIGLARE
>From the early rumor mill...
Practical, hard multi-coating was developed in the 50's and early 60's for airborne
reconnaissance. Lenses were produced within the US by a US manufacturer by persons with
security clearances. I cannot say if it was "OCLI". The technology was later
transferred
to NASA and reckoned as a "NASA development" in as much as the actual sources were to
remain unknown. This is the way "deep black" works.
Beyond this, I have no understanding of how the technology was transferred to industry.
Somewhere in the back of my mind is remembrance of an old discussion that both Asahi
and
Zeiss developed practical "mass" production techniques, together or separately, I don't
remember.
Remember, this was only rumor...
Regards,
Bob...
-------------------------------
Democracy is two wolves and a lamb voting on what to have for lunch. Liberty is a
well-armed lamb contesting the vote!
TOP RUMOR ANTIGLARE
----- Original Message -----
From: <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Thursday, February 15, 2001 8:23 AM
Subject: SMC - Zeiss x Asahi ?!?
> After reading the recent thread on "who invented SMC" (again ;(,
> I decided to throw oil into the fire here:
>
> 1) Even on AOHC pages, it's said that MC was developed by OCLI, US company
> doing work for NASA. Asahi licensed (parts?) of the process to form SMC.
> //that's what's AOHC article says.
>
> now information to the contrary, from my friend a (collector):
>
> (rephrased by myself)
>
> Around 1967, Zeiss foundation decided to "scrap" Zeiss Ikon (which was not
> producing enough profit), and entered negotiations with Asahi. Goal:
> producing of camera bodies and lenses in Japan but to Zeiss design & QC.
> This connection continued for 3-4 years but then Asahi determined that
> Japanese hojme market wouldn't buy Japanese made Zeiss lenses.
> From this cooperation, came pooling of research into multicoating techs,
> which resulted in both companies claiming multicoating at the same time.
> The remnants of this cooperation may be even the K mount, which some claim
> been at least codeveloped by Zeiss for use on the joint Asahi-Zeiss camera
> (after all, Asahi pirated the popular M42 mount invented by Zeiss
> Ikon/Zeiss Ikon VEB /east/).
> The information comes from joint Asahi-Zeiss press releases between 1966
> and 1972, and various sources on Zeiss history (e.g. The Zeiss Compendium
> by Barringer & Small). Also, Asahi was supposed to give NASA a stipulation
> when NASA acquired MC optics from them, as NASA had previously been
> obtaining such gear from Zeiss. Zeiss wrote NASA a confirmation that Asahi
> had the rights to use the process.
>
> Please understand that I do not have access to "Western" photo-history
> literature. Most of the historical literature about photography I have is
> either dealing mainly with pre-WWII photography or dealing only about US
> photography. So this is all information I heard from my friend.
>
> Also, to the issue of T coating somebody mentioned: Lens coating was being
> researched long before WWII, but all the attempts were not much working. In
> fact, about turn of the century somebody saw that old lenses with sort of
> haze/"coat" on the elements produce better pictures than brand new lenses.
> The haze was just monomolecular so it acted as a anti-reflective layer.
> Many approaches were tried, but only one proved to be stable and hard
> enough was one by Zeiss, developed before WWII - vacuum coating of hard
> substances on the glass. They called such lenses "V" for Vergüted I think,
> and some "T" for Treated. Other companies followed.
>
> Actually, I don't give a damn if the SMC on my lenses was developed by
> Zeiss, Pentax or both together, and who did first Multicoating layers. I
> think that somewhat stable MC must have been researched quite a long time
> before SMC was marketed, by several companies. After all, Fuji claimed to
> be using EBC on some TV lenses even back in 1960s (as said by AOHC
> article). And scientists must have been trying some of it even before.
> It is maybe more like who developed the first commercialy usable, durable
> multicoating. From my information, it was joint Asahi & Zeiss.
> I said I don't give a damn, but it of course interests me (but not enough
> to start some flame war - I just presented information known to me). Camera
> history is an interest to me (specially history of lenses... a question for
> you: was there any cooperation between designers of Planar and Biometar
> /these lenses are virtually same, except Planar has splitted first element
> into two, and Biometar has splitted second element into two/ ? :)
>
> Frantisek (please, please, CC a copy of your message to my personal
> address of [EMAIL PROTECTED] too, because I have moved to the NOMAIL list
> - too much mails with the MZ-S here :)
>
> P.S> I am so sad! I was just told that MZ-S will not be introduced before
> Summer into Czech republic :(
>
> -
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>
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