In another aspect, {TAIL ~ the five lenses} are divided into {HEAD ~ two lens groups}, wherein at least one of the lens groups is moved along an optical axis with respect to at least another of the lens groups to focus the distorted zoom lens 
In another aspect , { TAIL ~ the five lenses } are divided into { HEAD ~ two lens groups } , wherein at least one of the lens groups is moved along an optical axis with respect to at least another of the lens groups to focus the distorted zoom lens
OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH