{TAIL ~ An amount} of defocusing performed by the defocusing mechanism and a gain adjustment by the gain adjustment device are dependent on {HEAD ~ a content} of the composite signal 
{ TAIL ~ An amount } of defocusing performed by the defocusing mechanism and a gain adjustment by the gain adjustment device are dependent on { HEAD ~ a content } of the composite signal
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 HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH