Hopefully this helps. They seem to have made these in a lot of different film formats. I can't think of any reason to have those 2 red windows except for 6x4.5.
Zeiss Ikon Box Tengor
Box Tengor is a series of medium format film box cameras made by Zeiss Ikon and produced between 1926-1956. It is a continuation model of Goerz Box Tengor that produced by Goerz before the merger to form the Zeiss Ikon. There are many types of the camera during its long production period for...camerapedia.fandom.com
Must be a 6x4.5, run out of 6x4.5 stickers and just made a second window in the 6x9 model.
Edit: Needs two windows for winding the film on the 6x9 track.
This one is the correct 6x9.
I take it the 4.5 is slightly smaller and has a shorter focal length than the 6x9?
Inspired by this thread, I think I'll take mine out for a spin.
It is the 56/2 and if I am not mistaken the last model made?
There are 3 distance settings and 3 apertures, double exposure prevention, cable release and tripod sockets - so very advanced for a box camera.
I am certainly not going to use the shown HP5. It is way too sensitive for a shutter speed of 1/30.
Inspired by this thread, I think I'll take mine out for a spin.
It is the 56/2 and if I am not mistaken the last model made?
There are 3 distance settings and 3 apertures, double exposure prevention, cable release and tripod sockets - so very advanced for a box camera.
I am certainly not going to use the shown HP5. It is way too sensitive for a shutter speed of 1/30.
It looks like it has a faint coating and I have often been in doubt - but this source:Is the lens on the 56/2 coated?
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