Patent ID: 7652688

Claim:
A zoom lens comprising a plurality of lens groups and varying magnification by changing a distance between the lens groups, wherein a last lens group which is positioned on an image side closest thereto and has a negative part group having negative refractive power and a positive part group arranged adjacent on the image side thereof and having positive refractive power, the positive part group is shifted in a direction vertical to an optical axis to shift an image, and Equations (1) and (2) are satisfied, where the equations are conditional, −0.30 <fgn /( Ngn·fT )<−0.05 (1) ν gn−νgis> 30 (2) where, fgn: a focal length of the negative part group in the last lens group, Ngn: an average refractive index of the negative part group in the last lens group, fT: a focal length of the entire system at a telephoto end, νgn: a composite Abbe number of the negative part group in the last lens group, and νgis: a composite Abbe number of the positive part group in the last lens group.