Canon Sure Shot 85 PowerShot A85 Camera User Guide - Page 77

Program AE Use the program AE mode to have the camera automatically set the shutter speed and aperture value to match the brightness of the scene. z The shutter speed and aperture value will show in red on the LCD monitor when the correct exposure cannot be obtained. Use the following methods to obtain the correct exposure and make them appear in white. • Use the flash • Change the ISO speed • Change the light metering mode Differences between the and Modes. z The following settings can be adjusted in mode, but not in mode. • Exposure Compensation • White Balance • ISO Speed • Flash (Flash on) • Photo Effects • Continuous Shooting • Light Metering Mode • Manual Focus • AF Frame z For the correlation between aperture value and shutter speed, see page 76. Shooting - Advanced Functions Setting the Shutter Speed When you set the shutter speed in the shutter speed-priority AE mode, the camera automatically selects an aperture value to match the brightness. Faster shutter speeds allow you to catch an instantaneous image of a moving subject while slower speeds create a flowing effect and allow you to shoot without a flash in dark areas. z If the aperture value shows in red, the image is underexposed (insufficient light) or overexposed (too much light). Adjust the shutter speed using or until the aperture value display turns to white. z The nature of CCD image sensors is such that noise in the recorded image increases at slow shutter speeds. This camera, however, applies special processing to images shot at shutter speeds slower than 1.3 seconds to eliminate the noise, thereby producing high-quality images. Nevertheless, a certain amount of processing time may be required before the next image can be shot. 75