Sony DSC-P150/LJ Operating Instructions - Page 52

Exposure In addition to the focus and other settings, it is also important to adjust the exposure in order to take beautiful pictures. Exposure is the amount of light that the CCD of the digital still camera is able to receive. This value changes according to the combination of the aperture and the shutter speed. When the amount of light is too large, the image becomes brighter (white), and when the amount of light is too small, the image becomes darker. The proper amount of light is called the "correct exposure". The correct exposure can be maintained by setting a faster shutter speed when the aperture value is reduced, or a slower shutter speed when the aperture value is increased from the correct exposure. Adjustment by aperture Aperture is the diaphragm of the lens part which adjusts the amount of light entering the camera. The aperture setting value is called the "Aperture value (F value)". Open (smaller F value) • The image tends toward overexposure (brighter). • The in-focus range narrows. Close (larger F value) • The image tends toward underexposure (darker). • The in-focus range widens. Adjustment by shutter speed Shutter speed adjusts the time during which light enters the camera. Faster • The image tends toward underexposure (darker). • Moving objects appear stopped. Slower • The image tends toward overexposure (brighter). • Moving objects appear to flow. When setting a slower shutter speed, we recommend using a tripod to prevent shaking. Overexposure • Open the aperture • Set a slower shutter speed Correct exposure Underexposure • Close the aperture • Set a faster shutter speed 52