This is a camera used at Taipei Museum / Taiwan to reproduce chinese art paintings , drawings and caligraphy. Camera lenght is 5 meters , Film widht is 2 meters. They ?roduce from the camera 12 color separations.
I used at different variety of films for argon laser to uv to daylight at prepress which roll width 120 centimeters to 30 meters. I think film could be from this kind of batch.
Who produces the lenses ? I cant even calculate the focal lenght ?
Focal length for a process type lens covering about 45 deg. would be about 4 meters if they are using it at 1:1 reproduction. Probably produced by some Chinese optical company.
cmyk + pantone inks which are true pigmented colors , not mix. If you find a pantone catalog , you can compare 4 color separation of a catalog color with true pigmented colors.