Archived posting to the Leica Users Group, 1999/04/15

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Subject: Re: [Leica] 75'lux focusing
From: "dan states" <dstate1@hotmail.com>
Date: Thu, 15 Apr 1999 14:33:47 PDT

By original post I was refering to Mikiro's, not your own. 

>
>No, nowhere did I imply that one would accurately a 50 F1...
>One of the most useful things Erwin ever posted was the 
>analysis of the "probable" focusing accuracy of said RFDR....
>I didn't save it, maybe someone else has it.....but it confirmed 
>what we leica users new 20 years ago -- empirically, of course...
>For example, I shoot a LOT with a 90 Summicron (old style/and 
current)
>I can hit 2 out of 3 on a good day, wide open, at less than 15 feet 
or 
>so....wide open....but it's still a crap shoot at wider than 
>f2.8 or 4....unless you're 40 feet, then no problem....portraits 
>are a nightmare with a 90 f2 or 75 1.4 at 6-7 feet!
>Give me FAST normal to wide lenses on the Leica, and a 105 1.8 on the 
>Nikon with a brightscreen....
>Walt
>
>
>On Thu, 15 Apr 1999 12:05:46 PDT dan states <dstate1@hotmail.com> 
wrote:
>> Umm...So they can focus a 50 f1 accuratly, per the original post, 
but 
>> nothing else??
>> 
>> 
>> 
>> 
>> >From: Walter S Delesandri <walt@jove.acs.unt.edu>
>> >Reply-To: leica-users@mejac.palo-alto.ca.us
>> >To: leica-users@mejac.palo-alto.ca.us
>> >CC: leica-users@mejac.palo-alto.ca.us
>> >Subject: Re: [Leica] 75'lux focusing
>> >Date: Thu, 15 Apr 1999 13:42:07 -0500 (Central Daylight Time)
>> >
>> >it's probably that the M6 can't focus a 75 at 1.4...oops, the 
>> >company forgot to tell you that....sorry.....
>> >BTW, it can't do much better with a 90 @ f2....they forgot 
>> >to tell you that, too...
>> >That's why God made Nikons....;) :) :)
>> >
>> >Walt
>> >
>> >
>> >On Thu, 15 Apr 1999 17:43:52 +0200 Mikiro Mori <arbos@silva.net> 
>> wrote:
>> >> 75 Summilux users,
>> >> 
>> >> Sorry if there was recent discussion on this topic. ---- I have 
>> used a 75
>> >> Summilux for 18 months, but have not yet learned to focus 
properly.  
>> At
>> >> f1.4-2, I make errors (both forward and backward) in >70% of the 
>> shots. I
>> >> use an M6 (classic), and the objects are usually at about 1.5-2 
m 
>> away.
>> >> With a Nocti, I seem to be doing better even at f1.  Also, I 
have 
>> much fewer
>> >> problems with an 80 Summilux-R at wide open.
>> >> 
>> >> Is it a problem only with me, or do many of the users have 
>> difficulties
>> >> focusing with this lens?  M6HM may help, but 0.85/0.72 is only 
an 
>> 18%
>> >> increase.  Inability to focus at wide open halves the value of 
this 
>> lens.
>> >> Please help.
>> >> 
>> >> Leicalement,
>> >> 
>> >> Mikiro
>> >> Strasbourg, France
>> >> 
>> >> 
>> >
>> >
>> 
>> 
>> _______________________________________________________________
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>
>


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