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Path: utzoo!watmath!watdcsu!herbie
From: herbie@watdcsu.UUCP (Herb Chong [DCS])
Newsgroups: net.rec.photo
Subject: Re: f/1 lenses (and High Speed film)
Message-ID: <1286@watdcsu.UUCP>
Date: Mon, 22-Apr-85 10:52:06 EST
Article-I.D.: watdcsu.1286
Posted: Mon Apr 22 10:52:06 1985
Date-Received: Tue, 23-Apr-85 06:09:54 EST
References: <2720027@acf4.UUCP> <232@bbnccv.UUCP>
Reply-To: herbie@watdcsu.UUCP (Herb Chong [DCS])
Organization: U of Waterloo
Lines: 36
Summary: 

In article <232@bbnccv.UUCP> jjd@bbnccv.UUCP (James J. Dempsey) writes:
>> Why is it that Leica has the only f/1 lens I've ever heard of?  And why
>> don't they make it for their SLR line?
>> 
>> The best anyone else seems to be able to do is f/1.2.
>
>Cannon used to make a f/0.95 50mm lens for their rangefinder cameras
>back in the 1950s.  
>
>		--Jim Dempsey--

i'm pretty sure nikon made a few like a 24/0.8 or something like that.
i know Contax made a 200/0.07, but it was really a sniper-scope so B&W
was all you could really shoot and resolution was marginal for photographic
work.  as a surveillance lens system, it was great.  anyway, all lenses
that are faster than 1.2 are very expensive, heavy, and have a limited
market.  it's much harder to keep distortions under control at wide
apertures and flare becomes a problem.  as a fan of available light
shooting, i try to keep up-to-date on things like fast film and high
speed lenses.  BTW, it's Canon.  

speaking of high speed films, has anyone ever used Kodak 2485 High Speed
Recording film with Kodak 951(?) developer?  this is NOT 2475 Recording Film
that you can sometimes find in camera stores.  with the 2485/951 combination,
an EI of 8000 can be used and a negative with full density range of
about 1.00 and normal contrast can be obtained.  however, $$$, and hard
as hell to find.  i have been told it only comes in 35mm/150ft rolls.

Herb Chong...

I'm user-friendly -- I don't byte, I nybble....

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