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| The quantity of light allowed to act on a photographic material; a product of the intensity (controlled by the lens opening) and the duration (controlled by the shutter speed or enlarging time) of light striking the film or paper. |
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| How a coor film reproduces the colors of a scene. Color films are made to be eposed by light of a vertain quality such as daylight or tungsten. Color balance also refers to the reproduction of colors in color prints, which can be altered during the printing process. |
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| A lens in which you adjust the focal length over a wide range. |
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| an instrument with a light-sensitive cell that measure the light reflected from or falling on a subject; used as an aid for selecting the exposure setting. |
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| the clarity of a photographic image in focus and contrast. |
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| the principle sourse of light on a subject or scene. |
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| abbreviation for PICture ELement. A small square of colored light that forms an image. |
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| a dark image outlined against a lighter background. |
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| a measure of the sensitivity to light of a photographc emulsion. Also the sensitivity setting in a digital camera. |
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| a single aperture or shutter speed setting. |
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| film that is color-balanced for illumination from tungsten light. |
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| moving the camera so that the image of a moving object remains in the same relative position in the viewfinder as you take the picture. |
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| a lens that produces cotinuous focusing from infinity to extreme close-ups. |
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| the moveable cover in a camera that controls the time during which light reaches the film. |
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| changing the lens aperture to a smaller opening. |
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| a built in exposure meter that automatically adjusts the lens opening, shutter speed, or both for proper exposure. |
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| light coming from behind the subject. |
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| the range of difference int eh light to dark areas of a photograph. |
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| the amount of distance between the nearest and farthest objects that appear in acceptable sharp focus in a photograph. |
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| micro-thin layers of gelatin on film in which light-sensitive ingredients are suspended. |
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| determines how much light is let in. |
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| film speed. Low ISO=less grain (portrait). High ISO=more grain (action). |
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