Vignetting and Kodak stereo cameras

[P3D Dr. George A. Themelis <DrT-3d@xxxxxxxxxxxxxxxxxxxxxxxxxxx>]

Paul Tablott gets it all wrong again!  I checked Charles' Piper
Technical Page and did not find any reference to the aperture
being in-between vs. behind the lenses in connection with
vignetting.  All Realist lenses have the aperture between
the lenses.  3.5 lenses vignette at small apertures, 2.8 lenses
do not vignette.  I think it is the lens' design that causes
that.  BTW, the Kodak lenses do not vignette at any aperture
while other 3-element lenses do.

Of course, the Realist was not the first American stereo camera
but the first American 35 mm stereo camera.  From Piper we read:
"The Kodak Stereo camera is the latest in a long line of stereo
cameras manufactured by Kodak, or by the Blair company (origninators
of the Hawkeye trademark) which Kodak acquired in 1899.  One of
these stereo cameras is No. 2 Stereo Kodak, used #101 roll film and
was manufactured from 1901 to 1905.  The last Kodak stereo camera
before the mid-century stereo revival was, interestingly, called
Stereo Kodak Model 1, also used #101 roll film, and was manufactured
from 1917 to 1924."

-- George Themelis



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