Ernst Leitz Wetzlar 400mm - ?

[renes]

Hello,

Recently I made a trade for great shape Ernst Leitz Wetzl 400mm lens, looks like pre- War II production lens. It's heavy solid piece of glass - weights about 2,5 kg. Seems to be very fast lens - it's 100mm across., I suppose it's f/3.6

Leitz never made lenses for large format, did not he?
So, what this was for? Big enlarger or projector?
Lens was fitted to large wooden plate.

[seven]

projector.

[Wimpler]

An episcope or epidiascope, to be a bit more specific

[renes]

Thanks.