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