Sony DSLR A100 User Guide - Page 95

Custom menu For details on the operation 1 page 80 Exp. comp. set In the default setting, if exposure compensation is selected when the flash is used, shutter speed, aperture, ISO sensitivity (only in AUTO mode), and amount of flash light all change in order to perform exposure compensation (page 65). By fixing the amount of flash light, you can limit the effect of exposure compensation to the background that is illuminated only by ambient light (light other than the flash.) Ambient&flash Exposure compensation is performed on both the ambient light range (the background that the flash light does not reach) and the flash light range. • Values that change: shutter speed, aperture, ISO (only in AUTO mode), amount of flash light • Values that do not change: none Ambient only The exposure compensation is limited to the ambient light range (the background), while the exposure of the flash light range is fixed. • Values that change: shutter speed, aperture, ISO (only in AUTO mode) • Values that do not change: amount of flash light • With the flash compensation, you can limit the compensation to flash light range by fixing the exposure of ambient light range that the flash light does not reach (page 57). Values that change: amount of flash light Values that do not change: shutter speed, aperture, ISO AF illuminator When you press the shutter button halfway down using the flash under dark lighting, the flash light may be fired. This is AF fill light to help easily focus a subject in auto focus mode. You can set the AF illuminator to on or off. On Fills the AF illuminator. Off Does not fill the AF illuminator. • When AF illuminator is set to [Off], the AF illuminator of an external flash (not supplied) is not triggered. 95