Assuming that the level of the output S of the amplifier 104 at {HEAD ~ the time} of {TAIL ~ white subject} is imaged is 1, and the level of the output S of each subject R , G , and B are SR, SG and SB, respectively: 
Assuming that the level of the output S of the amplifier 104 at { HEAD ~ the time } of { TAIL ~ white subject } is imaged is 1 , and the level of the output S of each subject R , G , and B are SR , SG and SB , respectively :
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL 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 OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH