5 eye and camera

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5 eye and camera

  1. 1. Function Camera Human Eye Similarities 1. opening for light to enter aperture pupil 2. control the amount of light entering camera/eye diaphragm control size of aperture iris muscles control size of pupil 3. refract light glass biconvex lens mainly cornea ; lens, aqueous & vitreous humor 4. object of light action to form image photosensitive chemicals on film photoreceptors(rods & cones) in retina 5. absorb excessive light to prevent multiple images formation dark internal surface pigmented, dark choroid Difference 1. focusing mechanism change distance between lens & film change focal length of lens using ciliary muscles

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