Archived posting to the Leica Users Group, 1996/08/09

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To: leica-users@mejac.palo-alto.ca.us
Subject: Re: 180mm Apo
From: rolandtan <imspl@pacific.net.sg>
Date: Fri, 9 Aug 1996 17:50:51 +0800 (SGT)

Is there only one version, optically, of this lens? I have the series 7.5
version.  I assume the later lenses are have only filter mount changes?
Thanks. Roland

At 07:51 AM 8/5/96 PDT, you wrote:
>
>"At 06:59 PM 8/2/96 -0400, you wrote:
>
>>generation lens 98mm, and the third 116mm.  I believe the first-generation
>>lens' center resolution figure of 280mm was the highest the Laboratory had
>>ever encountered.
>
>Then they never encountered the 180 Apo telyt. It has, according to U.S.
>Navy tests I saw once, a center resolution of higher than 400 and edges were
>375. No wonder people think they are consistent to the edges. Only Tech Pan
>film has a hope of discerning a difference, and even then, testing technique
>would have to be laboratory quality.
>
>==================
>Eric Welch
>Grants Pass Daily Courier
>NPPA Region 11 JIB Chair"
>
>Seconded.  Without the benefit (?) of resolution charts, pictures taken with 
>the 180mm Apo Tely-R f/3.4 just jump out at you.  This is one impressive 
>lens, and available at decent prices on the second hand market.
>
>Thomas
>