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