To provide a zoom lens with a vibration proof function which is compact, and has a large aperture ratio, a high variable power, a high angle of view at a wide angle end, and high focusing performance when camera shake is compensated.

The zoom lens has, from an object side: a first lens group G1 having positive refractive power; a second lens group G2 having negative refractive power; a third lens group G3 having positive refractive power; a fourth lens group G4 having negative refractive power; and a fifth lens group G5 having positive refractive power. The zoom lens is characterized in that: the fifth lens group G5 is moved from the first lens group G1 when power is varied from a wide angle state W to a telephoto end state T; the fourth lens group G4 is composed of only one lens which is a cemented lens of a negative lens L41 and a positive lens L42; and a blur on an image face is compensated when the camera shake occurs, by moving the fourth lens group G4 in the direction substantially perpendicular to an optical axis.

COPYRIGHT: (C)2007,JPO&INPIT