CAMERADizon, Coralde, PatuboTau
HOW DO      CAMERA     LENSES     WORK?LENS BASICS  - Objects give off reflected rays of  light all directions. - Light fo...
   In a camera, by    adjusting the    distance of the lens    you can get the    light from your    subject to fall    f...
 In film cameras the focused light falls on a  photosensitive chemical emulsion coating a  plastic film. In digital came...
FOCUSING   light falling from objects at different distances    will have a different focal plane.
   This explains    why sometimes    when you take a    photo of    something close    up the    background    appears fu...
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  • LENS BASICSBoth digital and film cameras work by light from the target image being focused on some form of detector whether it be photographic film or the CCD sensor of a digital cameraObjects give off reflected rays of light all directions. Light for the target image enters the camera through a glass or plastic lens. This bends (refracts) the light. All the rays of light from a point on the target object will meet a certain point (focal point).
  • Camera

    1. 1. CAMERADizon, Coralde, PatuboTau
    2. 2. HOW DO CAMERA LENSES WORK?LENS BASICS - Objects give off reflected rays of light all directions. - Light for the target image enters the camera through a glass or plastic lens. This bends (refracts) the light. - All the rays of light from a point on the target object will meet a certain point (focal point).
    3. 3.  In a camera, by adjusting the distance of the lens you can get the light from your subject to fall focused onto a film plane.
    4. 4.  In film cameras the focused light falls on a photosensitive chemical emulsion coating a plastic film. In digital camera it falls onto a CCD receptor. Your eye works exactly in the same way with light being focused onto your retina
    5. 5. FOCUSING light falling from objects at different distances will have a different focal plane.
    6. 6.  This explains why sometimes when you take a photo of something close up the background appears fuzzy (and vice versa)

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