100 P, S, A, and M ModesP, S, A, and M ModesP, S, A, and M modes offer different degrees ofcontrol over shutter speed and aperture:Shutter Speed and ApertureMode DescriptionP Programmed auto(0 102)Recommended for snapshots and in othersituations in which there is little time toadjust camera settings. Camera sets shutterspeed and aperture for optimal exposure.S Shutter-priority auto(0 104)Use to freeze or blur motion. User choosesshutter speed; camera selects aperture forbest results.AAperture-priorityauto(0 106)Use to blur background or bring bothforeground and background into focus. Userchooses aperture; camera selects shutterspeed for best results.M Manual (0 108)User controls both shutter speed andaperture. Set shutter speed to “Bulb” or“Time” for long time-exposures.