In the case of an aperture priority exposure control using a programmed shutter, {TAIL ~ disadvantageous ripple motion} of {HEAD ~ the shutter sectors} is eliminated, thus enabling high precision exposure control 
In the case of an aperture priority exposure control using a programmed shutter , { TAIL ~ disadvantageous ripple motion } of { HEAD ~ the shutter sectors } is eliminated , thus enabling high precision exposure control
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH