A shutter driving apparatus drives {HEAD ~ a programmed shutter} with a stepping motor, by using a driving current pulse {TAIL ~ whose waveform} has a leading half that gradually increases in amplitude and a trailing half having an amplitude smaller than the peak value of the pulse 
A shutter driving apparatus drives { HEAD ~ a programmed shutter } with a stepping motor , by using a driving current pulse { TAIL ~ whose waveform } has a leading half that gradually increases in amplitude and a trailing half having an amplitude smaller than the peak value of the pulse
OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH