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