"see-thru" camera optics?

Discussion in 'Digital Photography' started by Jer, Oct 26, 2005.

  1. Jer

    Jer Guest

    Jer, Oct 26, 2005
    #1
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  2. Jer

    Bob Guest

    On Tue, 25 Oct 2005 21:44:24 -0500, Jer <> wrote:

    >What kinda scam deal is this?
    >
    >http://www.kaya-optics.com/products/experiments.shtml



    Do you have a video camera? Film someone with a TV remote control, aimed at the
    camera, and have them press some buttons... you may see a flashing light at the
    end of the remote, which can't be seen by eye... Depends on the camera sensor,
    some can change the IR light from the remote into visible.
    Bob, Oct 26, 2005
    #2
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  3. Jer

    Dan Birchall Guest

    (Jer) wrote:
    > What kinda scam deal is this?
    > http://www.kaya-optics.com/products/experiments.shtml


    None, necessarily. It's well-known that certain video cameras with
    "low light" or "night" modes are sensitive to near-infrared wavelengths
    of light, and the effects described here appear to depend on that.

    --
    http://08016.com/ - Burlington City history on the internet, since 1995.
    Dan Birchall, Oct 26, 2005
    #3
  4. Jer

    Harry Guest

    Harry, Oct 26, 2005
    #4
  5. Barry L. Wallis, Oct 27, 2005
    #5
  6. Jer

    Rich Guest

    On Tue, 25 Oct 2005 21:44:24 -0500, Jer <> wrote:

    >What kinda scam deal is this?
    >
    >http://www.kaya-optics.com/products/experiments.shtml


    Basic, infrared filter. B&W, Hoya make them too.
    What you really want instead is a still camera using
    a monochrome CCD, a single-element quartz lens
    and an infrared filter. Or, just go buy an old Rebel
    or D60 and have it modified by Hutech.com
    -Rich
    Rich, Oct 28, 2005
    #6
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