In yet another aspect, an image sensor is moved in conjunction with one of the lens groups relative to {HEAD ~ a second} of {TAIL ~ the lens groups} 
of
In yet another aspect , an image sensor is moved in conjunction with one of the lens groups relative to { HEAD ~ a second } of { TAIL ~ the lens groups }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL