Archived posting to the Leica Users Group, 2000/07/17

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Subject: [Leica] Rangefinder/water level (was: Another (new) 15mm for Leica M (39mm) , the Panomigon 15mm f22
From: Christer Almqvist <christer@almqvist.net>
Date: Tue, 18 Jul 2000 00:45:58 +0100
References: <200007170502.WAA14742@mejac.palo-alto.ca.us>

I have just got back to France and picked up the magazine featuring the
test of the Panomigon. This lens is a bit  too esoteric for me, but  there
was a picture of the rangefinder that I found very interesting. The problem
with separate wide angle rangefinders is that if you put them in the hot
shoe, then you can't put the water level in the hot shoe, and v.v.. Now
this guy has made a water level that fits into the hot shoe, and he has put
another hot (cold?)shoe on top of  the water level where you put the
rangfinder. OK that increases parallax,  but just very little. The small
air bubble in the waterlevel is situated  about half an inch in front of
the rangefinder, and you can still see it when the rangefinder is put in
place on top of the water level. Looks very practical. Perhaps you can even
see the bubble when looking through the rangefinder, then perhaps not so
practical. And now the real good news. The water level is only 80 french
francs. I'll call the guy in the morning.
(The lens is 3,400 and the viewfinder 2,500 francs;  divide by about six to
get to Euro or dollars.)

PS I see he has got a website   www.Lux-technologies.com

>> From: "Henning J. Wulff" <henningw@archiphoto.com>
>> >> An effective aperture (with ACV, whatever that
>is!) of f/22, and at best
>> >> geometric aperture of f/11 doesn't bode well for
>either practicality nor
>> >> optical performance.
>>
>> Sounds like a dithered center filter (the dots MUST
>be denser in the center
>> to work, right?).
>
>
>Or a zone plate??
>
>Jason Hall


- --
Christer Almqvist
D-20255 Hamburg, Germany and/or
F-50590 Regnéville-sur-Mer, France