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Auto iris lens with external camera

Discussion in 'Electronic Design' started by Wim, Sep 3, 2004.

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  1. Wim

    Wim Guest

    For a Fujinon CCTV lens with video auto-iris I need a videosignal with a
    brightness that depends of the lightintensity.
    The camera has no constant video-output so I'm using a little cmos module
    without AGC for the feedback.

    At little lightintensity changes the iris is working fine, but when the
    lightintensity changes are strong the iris is responding much too strong.
    The level en ALC settings of the lens are not sufficient.

    How can I resolve this problem?
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