Wow!
Very cool.
Thanks so much!
>
> Got it! (well, sort of).
>
> At this link:
>
> [ http://www.google.com/patents?id=fKI0AAAAEBAJ ]
>
> you'll find a patent for a "Very compact wide-angle zoom lens system" by
> Olympus Optical Co. Ltd., dating back to 1978.
>
> There are 4 distinct "incarnations" of such a wide-angle zoom: the first
> two
> are constant f4s, whose field of view ranges from 84° to 56°, (that is
> 24 to
> 40mm f4 zooms). The latter two are constant f3.5s, whose field of view
> ranges from 84° to 62° (that is 24 to 35mm f3.5 zooms).
>
> Judging by the actual pictures of the production (!) item recently
> appeared
> on the list, I suppose that it should be a slight variation of the first
> two
> designs, both showing a very weak positive front element and a small back
> element (the one nearest to the film plane).
>
> Aberrations for the first two embodiements are quite small, if not for a
> pronounced distortion (something less than 4%) on the wide end.
>
> With the original patent finally in hand, such crafted persons as John
> (Hermanson) will easily be able to start a mass production of this almost
> forgotten lens... :)
>
> Regards!
>
> Fabio
>
> On Wed, Mar 19, 2008 at 3:01 PM, Fabio Fiorellato <flowerside@xxxxxxxxx>
> wrote:
>
>> According to this site: <
>> http://www.luciolepri.it/lc2/marcocavina/articoli_fotografici/Zuiko_OM_85_1,4/00_pag.htm>,
>> 50 of them went into production (we're talking the 85mm f/1.4 GRIN).
>>
>> Guess the lucky owners won't give them away neither when their hands are
>> cold and dead!
>>
>> Strangely enough, none of them surfaced on the 'bay in the last 10
>> years... :)
>>
>> In one of my latest post to this list I reported my results after a
>> quick
>> search on the google patents base (www.google.com/patents) regarding
>> Olympus patents in the film photography area. Time to do a new search
>> and
>> see if that 24-40 shows up somewhere...
>>
>> I'll let you know if something interesting is in the air
>>
>> Regards
>>
>> Fabio
>>
>>
>> On Tue, Mar 18, 2008 at 8:13 PM, Chuck Norcutt <
>> chucknorcutt@xxxxxxxxxxxxxxxx> wrote:
>>
>> > Wonder what happened to that variable refractive index glass? And I
>> had
>> > to chuckle at the 4MP self-imposed limit for a 2/3" CCD. That was
>> > obviously the engineer speaking before he was beaten down by the
>> > marketroids.
>> >
>> > Chuck Norcutt
>> >
>> > Geilfuss Charles wrote:
>> > > Well that is a new one on me. After seeing this post I
>> searched
>> > > a bit on Google but found no other links, but I did find another
>> > > interesting lens: the OM 85mm f1.4 GRIN lens.
>> > >
>> > > http://www.geocities.com/maitani_fan/camera_technologies.html
>> > >
>> > > Charlie
>> > >
>> > >
>> >
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>>
>>
>>
>> --
>> The definitive answer to the meaning of life, universe and everything
>> else
>> is: 42.
>
>
>
>
> --
> The definitive answer to the meaning of life, universe and everything else
> is: 42.
>
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