((*)) (ON): In addition to being the same ON positionas "A", the electronic beeper tone sounds in thefollowing cases;1) When correct focus is obtained. - AF focus signal(short beeper tone)2) When the automatically-set shutter speed is too slowto hand-hold.--Camera-shake warning (long beepertone)[ ] (ON): Full auto position. The setting will be asfollows automatically regardless of the mode. 1) AFmode - ONE SHOT 2) AE mode - P (Program) 3) Filmwinding mode - S (Single) 4) Electronic beeper tone-short; AF focus signal-long; camera-shake warningVarious AE and AF modes described in "Making the Most of Your EOS 620/650" cannot be set when the mainswitch is at the " [ ] " position. Make sure the main switch is set to "A" or" ((*)) " position.2. Setting the AF modeThis camera has two AF modes and the manual focus mode.ONE SHOT: Normal set position. The lens stops moving once focus has been obtained. As long as the shutterbutton is kept pressed halfway, the original focus and exposure remain locked. This mode is useful when youwant your subject to be off-center.· The shutter releases only after AF completion.SERVO: The lens continues to rotate, refocusing every time the focusing distance changes. Use this mode tofreeze subject motion at a certain moment while following a moving subject. Exposure is determined at themoment of shutter release.· The shutter releases whether or not AF has been completed.MANUAL: Refer to p. 56.To set the AF mode, followthese steps:1) Set the lens focus modeswitch to "AF."2) Open the switch cover andpress the yellow AF modeselector.· The display will be held on for approximately eight seconds so you can remove your finger. To clear this statuswithin eight seconds, press the shooting mode selector.