Revere & Wollensak

[P3D Jonathan R. Gross <catalyst@xxxxxxxxxxxx>]

> Subject: Re: Revere & Wollensak (PHOTO-3D digest 1844)

Bob Howard writes:
> (snip) The f/2.7 Wollensak is no special lens and =

> probably the same triplet design sold by the hundreds in the single =

> frame Univex Mercury. The f/2.7 of course is not that significant =

> from an f/2.8 but all the f/2.8 as Tessar types while the Wollensak =

> does not seem to be. Other than the lenses there is not much =

> different in the camera other than trim. BobH

Eric Goldstein writes: (snip)
> Rare earth glass not withstanding, the wollensak lenses are triplets,
> and not tessar types. Achieving high corner resolutions with triplet
> design is difficult at wide apertures. Also, so-called rare earth glass=

> was also in use on other cameras of W10 vintage, including Realists
> (Ektar and Germany lenses) and Belplascas.

It took me a while to run across corroboration, but in Jess Powell=92s
"REVERE/WOLLENSAK: A repairman=92s View" he states on page 38  "When it
comes to clarity, the 2.7 Tessar on the Wollensak does make a difference
over the 3.5 triplet.  It=92s interesting to note that of the forty or so=

35mm stereo cameras, only Wollensak, Iloca Rapid 2.8, Realist and
Belplasca offered the more desirable four element lens".

Maybe he's mistaken also, but proof is in the pictures.  Jon


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