According to {TAIL ~ the present invention}, the total gain is continuous across the thresholds of minimum shutter gain and {HEAD ~ minimum chip gain} 
According to { TAIL ~ the present invention } , the total gain is continuous across the thresholds of minimum shutter gain and { HEAD ~ minimum chip gain }
OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD