The image processing system tracks {TAIL ~ the tone densities} calibrated to provide {HEAD ~ enhanced film masking} 
The image processing system tracks { TAIL ~ the tone densities } calibrated to provide { HEAD ~ enhanced film masking }
OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD