Olympus iS-20 IS-20 DLX Instruction Manual (2 MB) - Page 49
Exposure - is 200 camera
UPC - 050332127395
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EXPOSURE Automatic Exposure Mode Exposure refers to the amount of light which strikes the film, and is controlled by a combination of aperture size and shutter speed. The correct amount of light, called correct exposure, depends on the film speed (indicated on the film package, e.g. IS0100 or.lSO-200). The automatic exposure function automatically sets the correct exposure. This camera employs two types of automatic exposure modes: programmed autoexposure and aperture-preferred autoexposure. With programmed auto exposure, the camera automatically selects the most suitable combination of F stop and shutter speed for the existing lighting conditions. This lets you concentrate on composing your shot and releasing the shutter at just the right time. With aperture-preferred auto, you select the desired F stop, and the camera automatically selects the correct shutter speed. Aperturepreferred auto gives more artistic freedom of expression and creativity by selecting a desired F stop to control the blur of the background. Program Chart (FULL AUTO) The following program chart is for 28mm wide-angle and 110mm telephoto focal lengths. According to the focal length, the camera's program itself changes. When the subject is brightly lit, the F stop and shutter speed change simultaneously. When the lighting is darker, the aperture remains wideopen and only the shutter speed changes to as slow as 2 sec. to match the available light (ISO 100). In the standard shooting mode (refer to p.40), if the built-in flash has been flipped up, it will automatically fire in dark lighting or backlit conditions. The shutter speed will be fixed at 1/100-sec. 49