A camera 1, in which {HEAD ~ the electromagnet} of {TAIL ~ the detection means} is used also to control the shutter closing action 
A camera 1 , in which { HEAD ~ the electromagnet } of { TAIL ~ the detection means } is used also to control the shutter closing action
OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH