Archived posting to the Leica Users Group, 2003/08/12
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]David Has anyone contacted the son of the inventor of this device? Jerry LRZeitlin@aol.com wrote: > <<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 > > -- > To unsubscribe, see http://mejac.palo-alto.ca.us/leica-users/unsub.html - -- To unsubscribe, see http://mejac.palo-alto.ca.us/leica-users/unsub.html