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Thread: What is the largest format camera that you have seen ever?

  1. #81
    Drew Bedo's Avatar
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    Re: What is the largest format camera that you have seen ever?

    Quote Originally Posted by Randy Moe View Post
    Imagine his surprise when he finds few will buy them for what he thinks they are worth.

    I have no such illusions.

    But I am always wrong...

    Reminds me of the old joke:

    "I had a bad dream where I had died and my wife sold off all of may cameras/guns/fishing gear for what I had told her I'd paid for it all"
    Drew Bedo
    www.quietlightphoto.com
    http://www.artsyhome.com/author/drew-bedo




    There are only three types of mounting flanges; too big, too small and wrong thread!

  2. #82
    Tin Can's Avatar
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    Re: What is the largest format camera that you have seen ever?

    I almost wish I had a wife, but too late now for me.

    2 are deceased. RIP

    Quote Originally Posted by Drew Bedo View Post
    Reminds me of the old joke:

    "I had a bad dream where I had died and my wife sold off all of may cameras/guns/fishing gear for what I had told her I'd paid for it all"
    sin eater

  3. #83

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    Re: What is the largest format camera that you have seen ever?

    Quote Originally Posted by Nodda Duma View Post
    During an optical design conference on the Big Island Hawaii in 2014, I was provided an exclusive tour of Gemini North Observatory on Mauna Kea. The primary mirror (i.e. the lens) is 26.6 feet in diameter. The focal length is 182 meters. There are f/6, f/14, and f/32 camera positions. At the image plane, the resolution is 1.610 arcsec / millimeter. So that's the largest camera I've ever seen. However, the image plane is only 3" x 3".

    The largest format camera I've seen is a 12" x 20" camera.
    The Gemini telescopes are designed more for high angular resolution than wide field of view, and so they don't have very large (physical) cameras at the image plane. Other instruments such as the Dark Energy Camera https://www.darkenergysurvey.org/the...nt/the-camera/ and the camera for the under-construction Large Synoptic Survey Telescope https://www.lsst.org/about/camera have physically larger detector arrays covering very wide fields of view (meaning several degrees, which is wide for a telescope). Even the LSST detector array is "only" about two feet in diameter.

    The pioneering camera of multiple CCD arrays used by the Sloan Digital Sky Survey was the predecessor to many of these. It was retired in 2009 or so and donated to the Smithsonian. I believe it is not currently on display, but may be someday. https://www.sdss.org/faceplat/ and https://airandspace.si.edu/collectio...rvey-ccd-array

    Interestingly (to me anyway), the SDSS camera surveyed the sky efficiently by moving the telescope during an exposure and clocking the signal across the CCDs to match the motion of the images on the focal plane. This is very similar to how a Cirkut camera works by scanning the lens and driving the film to match the image motion.

  4. #84

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    Re: What is the largest format camera that you have seen ever?

    Years ago I visited a photographer's studio. Basically a rectangular space. At one end, he had his darkroom. That darkroom also served as a big box camera with a lens board built into the wall (looking out to the studio) and a stand for a film holder. 20 something by 30 something film.

  5. #85

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    Re: What is the largest format camera that you have seen ever?

    Tektronix was involved with CCD imagers during the 80's.
    https://vintagetek.org/charge-coupled-devices/

    One of them ended up on Hubble...
    https://vintagetek.org/wp-content/up..._V6_3_1990.pdf


    -Digital camera at Eastman Kodak 1975, Steven Sasson.
    https://youtu.be/wfnpVRiiwnM


    Bernice


    Quote Originally Posted by reddesert View Post

    The pioneering camera of multiple CCD arrays used by the Sloan Digital Sky Survey was the predecessor to many of these. It was retired in 2009 or so and donated to the Smithsonian. I believe it is not currently on display, but may be someday. https://www.sdss.org/faceplat/ and https://airandspace.si.edu/collectio...rvey-ccd-array

    Interestingly (to me anyway), the SDSS camera surveyed the sky efficiently by moving the telescope during an exposure and clocking the signal across the CCDs to match the motion of the images on the focal plane. This is very similar to how a Cirkut camera works by scanning the lens and driving the film to match the image motion.

  6. #86
    tgtaylor's Avatar
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    Re: What is the largest format camera that you have seen ever?

    I never saw this and larger cameras have been made but during the 1860's "Louis E. Walker was 'constantly busy' copying drawing and maps for the Office of the Architect and other federal departments. In his work with the direct paper-negative process, Walker made duplicate prints at least as large as 24-1/2 x 36-1/2 inches in size."

    Thomas

  7. #87
    おせわに なります! Andrew O'Neill's Avatar
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    Re: What is the largest format camera that you have seen ever?

    The biggest camera I've ever seen and used is a 14x17.

  8. #88

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    Re: What is the largest format camera that you have seen ever?

    I worked on a reprographic camera at Ford Motor Company in the mid 70's. The copy board was about 20 feet long by about 7 feet high. The film board was about 8 feet long by 6 feet high. We could put a full engineering drawing on the copy board. The standard size of the drawing was about 4-1/2 feet high, by 16 feet on length. We would shoot the drawing in sections, with a 'shrink factor' that was measured in thousands of an inch. The negative was about 4-1/2 feet square. We would process these by hand, and then splice them together. The negative would go to another area of Ford to have the stamping molds made for the body parts. The reason for the shrink factor was to allow for the size difference when the part was stamped, and then cooled to room temperature. The camera took up two rooms, with the copy board and lights in one room, and the film board and processing sinks in the other room.

  9. #89
    Jac@stafford.net's Avatar
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    Re: What is the large format camera that you have seen ever?

    Randy, who is the babe?

  10. #90
    Tin Can's Avatar
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    Re: What is the large format camera that you have seen ever?

    You mean Plastica or Plastika?

    Quote Originally Posted by Jac@stafford.net View Post
    Randy, who is the babe?
    sin eater

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