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Difference between 1/4 & 1/3 format

Discussion in 'Security Alarms' started by Blythe Noe, Feb 19, 2004.

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  1. Blythe Noe

    Blythe Noe Guest

    I have never used a 1/4 format color camera, however, I am considering
    using them on an upcoming job. If a 1/4 format is listed with a
    resolution of 400 lines, and the 1/3 format is listed with a
    resolution of 400 lines, which camera should produce the better
    quality picture, if both cameras were mounted side by side, looking at
    same view? Thank you.
     
  2. Jackcsg

    Jackcsg Guest

    It depends on the distances your looking at, and whether or not it's an
    inside or outside, again by distance. 1/4" Cameras typically are used in
    indoor, short distances. It's the fish-eye effect. If your trying to view
    long distances, and have lighting conditions, the more light gets to the
    chip, the better the quality (i.e. the bigger the better). Resolution is
    behind the chip, your view is in front. You can only push a lens so far
    before the view becomes distorted...the resolution will remain the same.
    Lens selection for 1/4" Cameras are generally limited to their functional
    line of sight (short distances). The lens is the focal point. It also
    depends on what your trying to identify...

    Jack
     
  3. Aegis

    Aegis Guest

    1/4 is the sensing area.

    1/3 > 1/4 (Bigger is better, right?)

    I see more 1/4 CCD's on the tiny board cameras and more 1/3's on the larger
    scale security cameras.

    In answer to your question: If both state 400 lines, you should see the same
    picture ASSUMING they are focused the same, are set to the same FOV, etc.
    and bear in mind that even a 1/3 CCD from Sony will look slightly different
    than a 1/3 CCD from Panasonic due to different manufacturing processes.
     
  4. rory

    rory Guest

    the 1/3" camera.

    generally the larger the lens format the better the image, however
    with new technology, 1/3" formats can give same or better quality than
    that of the 1/2" formats. 1/4: is different, normally uses on mini
    dome cameras.

    Rory
     
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