Archived posting to the Leica Users Group, 2002/12/03
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Willem-Jan:
You've got me beat... you win the kudos for having perhaps the largest
photographic item on the LUG.
Now that printing companies are going digital, computer to plate, they
don't need process lenses or light tables any longer.
So, having wanted such a device ever since I took up LF shooting to
view/compare slides from 35mm to 11x14 inches, I bought one "cheap"
through eb*y from a printing company about 40 miles from my home here in
Massachusetts.
If you care to look it's Item # 1791095985
116cm wide, 96cm deep and 90cm tall - approx.
I went to get it with my small pickup truck and I knew that I that I was
in a little bit of a "fix" when the seller used a fork lift to load the
table into my truck. When I arrived home I found that my son (21) and I
could not lift it. So I disassembled it in the truck and we carried all
of the pieces into the house for re-assembly.
Big, but I can view/compare four 11x14s, some 8x10s and strips of 6x6
and 35mm simultaneously.
- --
Jim - http://www.hemenway.com
Willem-Jan Markerink wrote:
>
> Dear group,
>
> Last week I became the proud owner of what must be one of the most
> unique pieces of Leitz projection equipment, the Large Lecture Hall
> Epidiascope IIIs[*]....a monstrous steel contraption, 211cm tall,
> 64cm wide, 94cm long, 300-500kg. Needed a full-size horsetrailer with
> loading-ramp to haul it home, 5 men for pushing it in the trailer, 3
> men for controlled unloading....8-))
>
> Here a preliminary image, lenses removed:
>
> http://www.a1.nl/phomepag/markerink/epimonst.jpg
>
> However, even though I bought it from the university where it had
> been in active duty many many moons ago, it had been so long out of
> duty, pushed aside in a projection room, only recently being forced
> to move due to demolishing of the lecture hall itself, that no body
> knew its year of build or purchase....it even preceeded the career of
> the current janitor
> ("It's old Jim, but not as we know it...."....8-))
>
> My only time-line reference is the fact that I already had an
> episcopic lens from another IIIs, with different focal length
> annotation; 1:3.5/700mm instead of f=100cm/1:3.5 (both 'EPIS', and
> yes, that's 20cm & 30cm lens diameter....the big one is too heavy to
> lift to chest-height(!)).
> Can anyone tell me whether this helps putting a date stamp on it, at
> least accurate to a margin of a decade?
>
> Serial number of the projector itself is A87052, but I doubt that
> helps anything, unless a few known samples around this number exist.
>
> Oh, diascopic projection (up to 4x5", wooden slide-adapters of
> 14x14cm) is 110v/1500W (E40 lamp), episcopic projection is 4x 1500W
> (with lens/condensor between lamp and paper, each lamp one lens,
> never seen that in smaller episcopes; probably a must in large
> lecture halls because of the highly inefficient nature of the
> episcopic projection (reflective)). Episcope lenses are 50cm/1:5.7
> and 60cm/1:4.5, in a dual/revolver set-up (for slightly different
> formats of slides)....same lenses are used on smaller Diaskop and
> Epidiaskop.
>
> [*] have yet to find the official German name, did speak to Leitz
> folks on the PhotoKina, who agreed with my 'Grossraum Epidiaskop
> IIIs' translation....further cooperative research is pending, as
> hardly anyone working at Leitz today knows much about any
> (Epi)Diaskop....either they are able to trace down one or more
> senior/retired employees, or I might get an invitation to do research
> in the Leitz archives itself....ah, the honor!....:))
>
> See also....
>
> http://www.a1.nl/phomepag/markerink/epimonst.htm
>
> ....for the only picture from a IIIs I have found in Leitz literature
> thusfar (this one has a 130cm episcope lens, 70cm diascope lens, but
> with 'internal' focus, unlike the 'open' screw-collar of both my
> 700mm and 100cm episcope lens (and both diascope lenses as
> well....only on an older & smaller Epidiaskop I have such
> sliding/internal focussing lenses)
>
> Only one time before have I seen such a IIIs projector being traded,
> in the UK (within some kind of association of historical photography,
> tried to track down more info back then, but failed due to their
> shielded membership structure (internal auction)).
>
> More about the last range of 'smaller' Diaskop and Epidiaskop (until
> late 60's) on:
>
> http://www.a1.nl/phomepag/markerink/diaskop.htm
> http://www.a1.nl/phomepag/markerink/epidiask.htm
>
> Bottom line:
> If *anyone* knows more about *any* of these projectors, in particular
> this huge IIIs, please step forward, in the name of optical/academic
> history....;))
>
> --
> Bye,
>
> Willem-Jan Markerink
>
> The desire to understand
> is sometimes far less intelligent than
> the inability to understand
>
> <w.j.markerink@a1.nl>
> [note: 'a-one' & 'en-el'!]
>
> --
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- --
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