[Leica] Visoflex modification

[LRZeitlin@aol.com]

<<I am still searching for an answer to my question about the LEICA 

VISOFLEX that was converted to a Pellicle Mirror.  Anyone have the 

reference to the camera mag (Pop or Modern Photography) write up?>>

David,

I don't have any infomation about the Visoflex with a pellicle mirror, but I 
do recall a Visoflex like unit that incorporated a solid beam splitter. This 
consisted of a pair of cemented right angle prisms, with the hypotenuse surface 
partly silvered. In effect the beam splitter was a solid piece of glass with 
an internal 45 degree partly reflecting mirror. Tiny units of this type are 
used in the M3 viewfinder. The unit had the advantage of no moving parts with a 
sacrifice of about a third of the light directed to the viewing eyepiece. A 
solid block of glass interposed between the lens and the film has the effect of 
shifting the focal plane back about 1/3 the thickness of the glass. This 
necessitated the use of a spacer between the "Visoflex" and the camera. Fortunately 
for photography, advances in SLR technology made the whole point moot. I 
havn't used my Visoflex in 20 years.

Larry Z

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