When implementing the mapping for {TAIL ~ negative film} , the multiplicative and additive constants are determined from the reference, e.g. green, band according to {HEAD ~ the following equations}: ##EQU4## 
When implementing the mapping for { TAIL ~ negative film } , the multiplicative and additive constants are determined from the reference , e.g. green , band according to { HEAD ~ the following equations } : # # EQU4 # #
OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH