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  1. #1
    Mustafa Umut Sarac's Avatar
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    3 Tons ULF Camera for Art Reproduction

    http://www.chineseartnet.com/Nigensha/proc.htm

    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 ?

    Umut

  2. #2

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    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.

  3. #3

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    Depending on the size of the original and the magnification used one of these APO Nikkor process lenses might have been used.

    1210mm f/12.5, image circle at 1:1 = 1750mm diameter

    1780mm f/14, image circle at 1:1 = 2310mm diameter

  4. #4
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    Awesome.

    The 12 color separations really has me scratching my head though...

  5. #5
    Mustafa Umut Sarac's Avatar
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    Chris ,


    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.



 

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