Archived posting to the Leica Users Group, 2002/07/07

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Subject: RE: RE: [Leica] Eyeglasses and diopter adjustment lenses
From: rclompus@cox.net
Date: Sun, 7 Jul 2002 21:40:52 -0400

Frank,

I'm going to call Leica in NJ tomorrow to find out the exact eyepiece power of their M6 rangefinder.  Then I can give you the correct answer.  Once I have that bit of information, I can nail the Rx the first time.  

53 right?

Richard  
> 
> From: "Frank Filippone" <red735i@earthlink.net>
> Date: 2002/07/03 Wed AM 12:14:44 EDT
> To: <leica-users@mejac.palo-alto.ca.us>
> Subject: RE: RE: [Leica] Eyeglasses and diopter adjustment lenses
> 
> OK... I am going to look a bit stupid......   I went to my Eye Dr. today to
> pick up my new glasses......  The right eye has window pane for distance and
> +2.25 for reading....  SO the eyepiece diopter that is the best for me is
> .... Zero?  or +.5 ?
> 
> No more guessing about my age... you were off by only a year......
> 
> Frank Filippone
> red735i@earthlink.net
> 
> -----Original Message-----
> From: owner-leica-users@mejac.palo-alto.ca.us
> [mailto:owner-leica-users@mejac.palo-alto.ca.us]On Behalf Of
> rclompus@cox.net
> Sent: Wednesday, June 26, 2002 7:51 PM
> To: leica-users@mejac.palo-alto.ca.us
> Subject: Re: RE: [Leica] Eyeglasses and diopter adjustment lenses
> 
> 
> Frank,
> 
> I need to know your distance prescription - not your reading prescription.
> The +2.00 for reading tells me your probably between 49 and 52.  Your
> distance prescription will determine the corrective eyepiece needed for
> clear vision through the rangefinder.
> 
> Can you tell me what your distance Rx is?  If we put our heads together, we
> can figure this thing out.
> 
> 
> Richard
> >
> > From: "Frank Filippone" <red735i@earthlink.net>
> > Date: 2002/06/26 Wed AM 01:32:00 EDT
> > To: <leica-users@mejac.palo-alto.ca.us>
> > CC: <rclompus@cox.net>
> > Subject: RE: [Leica] Eyeglasses and diopter adjustment lenses
> >
> > Richard.. my reading perscription from my Dr. is +2.  I went to a Leica
> > store and tried +1.5, +2, +1.0, 0 (no diopter) and -.5.  There was no +.5
> > available.  This was on a .72 Leica M7 ( I have a M6, but the VF should be
> > the same) and compared to a M6 ( mine) so I could swap diopters and try
> > things out as a comparison.....
> >
> > The +1.5 should have been perfect, given the finder is supposed to be a
> +.5
> > on its own ands assuming my reading perscription is what I should be
> > equating to........ wrong... The best I could tell was 0.. none...  with
> the
> > +1 equally good/bad... so I think maybe that I need a +.5
> >
> > Note that the -.5 was substanbtially worse than the 0.  So a - anything
> > looks worng for me as well...
> >
> > I tried this with my glasses on and off... with virtually little change...
> > the glasses were used in the chin down position, using the far distance
> > perscription......
> >
> > My conclusion is that you can not guess nor calculate .. you must go to a
> > store and try the things out.....  YMMV
> >
> > I have tried this twice now.. once on my Hassy, and now on the Leica....
> > Neither worked as the equations should have....I use a chimney finder ont
> he
> > Hassy that has a variable Diopter built in and the PME 90, ditto the
> > adjustability.....
> >
> > The M6 is unsuccessful to date....
> >
> > Frank Filippone
> > red735i@earthlink.net
> >
> >
> > --
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> >
> 
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