131ZExposure ModeTo determine how the camera sets shutter speed and aperturewhen adjusting exposure, press the I button and rotate themain command dial until the desired option appears in the topcontrol panel.I button Main command dial Top control panelMode DescriptioneProgrammed auto (0 133): Camera sets shutter speed and aperturefor optimal exposure. Recommended for snapshots and in othersituations in which there is little time to adjust camera settings.f Shutter-priority auto (0 134): User chooses shutter speed; cameraselects aperture for best results. Use to freeze or blur motion.gAperture-priority auto (0 135): User chooses aperture; camera selectsshutter speed for best results. Use to blur background or bringboth foreground and background into focus.hManual (0 136): User controls both shutter speed and aperture.Set shutter speed to Bulb (A) or Time (%) for long time-exposures.