By cutting off this infra red range of {HEAD ~ the spectrum}, the sensitivity of {TAIL ~ the camera device} for infra red radiation is reduced 
By cutting off this infra red range of { HEAD ~ the spectrum } , the sensitivity of { TAIL ~ the camera device } for infra red radiation is reduced
OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH