By way of example, a five lens system can perform magnification functions by producing {HEAD ~ distortion} that expands the image in the center of the field of view and compresses {TAIL ~ the image} in the periphery of the field of view 
compresses
By way of example , a five lens system can perform magnification functions by producing { HEAD ~ distortion } that expands the image in the center of the field of view and compresses { TAIL ~ the image } in the periphery of the field of view
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH