wherein {HEAD ~ an amount} of defocusing performed by said means for defocusing and an adjustment of said gain by said means for adjusting are dependent on {TAIL ~ a content} of said composite signal 
are dependent on
wherein { HEAD ~ an amount } of defocusing performed by said means for defocusing and an adjustment of said gain by said means for adjusting are dependent on { TAIL ~ a content } of said composite signal
OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH 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