Archived posting to the Leica Users Group, 1998/11/18

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Subject: RE: [Leica] diopter correction => why isn't there a flip up magnifier....
From: "Robert G. Stevens" <robsteve@istar.ca>
Date: Wed, 18 Nov 1998 11:37:58 -0400

It would have to go in front of the rangefinder window as well or the
double images would be diffent sizes.  Thats why the eyes on RF summicrons
cover both the viewfinder and the rangefinder windows.

Regards,

Robert

At 01:27 PM 11/18/98 -0000, you wrote:
>OK,
>Hear what you say...
>Sounds simple and probably too good to be true. Perhaps something like a 2x
>converter in reverse, sitting behind the lens system in question (the
>viewfinder) but giving a (1/2x) wider view rather than a narrower view.
>I suspect that the limiting factor is the angle of view that the basic
>system offers, if you look through a window' that can only see so much, you
>can only increase that view, I suspect, at the front end, rather than the
>rear. The total image that reaches the back of the viewfinder is as much as
>you can then 'play' with, you could then narrow the angle but I can't figure
>how you'd create a way of seeing more than you've started with...
>
>Jem
>
>> -----Original Message-----
>> From:	Bryan Willman [SMTP:bryanwi@seanet.com]
>> 
>> Sure, but goggles go on the front, and
>> are part of the lens.  I'm suggesting
>> something that would go on the back
>> (only need 1 not a pair) and are part
>> of the camera, rather than the lens.
>> 
>> bmw
>> 
>> -----Original Message-----
>> From: Jeremy Kime <jeremy.kime@bbc.co.uk>
>> To: 'leica-users@mejac.palo-alto.ca.us'
>> <leica-users@mejac.palo-alto.ca.us>
>> Date: Tuesday, November 17, 1998 8:55 AM
>> Subject: RE: [Leica] diopter correction => why isn't there a flip up
>> magnifier....
>> 
>> 
>> >Bryan,
>> >This sounds like the old 'goggles' or 'specs' arrangement to me for the
>> 35mm
>> >M3 lenses, or the Tele-Elmarit 135/2.8 for the M2 (et al), are you aware
>> of
>> >these?
>> >
>> >Jem
>> >
>> >> -----Original Message-----
>> >> From: Bryan Willman [SMTP:bryanwi@seanet.com]
>> >>
>> >> In all the discussion over M6 versus M6HM, I wonder
>> >> why there isn't, for the M, a flip up magnifier like that
>> >> often used on SLRs.  (Have I asked this before
>> >> and missed the answer?  If so, sorry.)
>> >>
>> >> Could such a thing be made?  Turn a .72x into
>> >> a .85x?  Or, a .85x into a .72x to make the 35mm
>> >> frame line more usable?
>> >>
>> >> Would such a thing be possible?  Anybody know
>> >> someone who could make one for me?
>> >>
>> >> Thoughts, comrades?
>> >> bmw
>> >>
>> >
>
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