130To 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 thecontrol panel.Exposure ModeI button Main commanddialControl panelMode DescriptioneProgrammed auto (0 132): Camera sets shutter speed andaperture for optimal exposure. Recommended for snapshotsand in other situations in which there is little time to adjustcamera settings.f Shutter-priority auto (0 133): User chooses shutter speed; cameraselects aperture for best results. Use to freeze or blur motion.gAperture-priority auto (0 134): User chooses aperture; cameraselects shutter speed for best results. Use to blur backgroundor bring both foreground and background into focus.hManual (0 135): User controls both shutter speed and aperture.Set shutter speed to Bulb (A) or Time (%) for long time-exposures.