Zoom lens

A zoom lens comprising:

• a first lens group including a lens having negative refractive power and a light path changing member for changing a traveling direction of an incident light beam;
• a second lens group including two lenses, i.e., a lens having positive refractive power and a lens having negative refractive power, and having negative refractive power as a whole;
• a third lens group including a stop, a front group lens having positive refractive power, and a rear group lens having negative refractive power arranged in this order, and having positive refractive power as a whole;
• and
• a fourth lens group having positive or negative refractive power arranged in this order from an object side,
• wherein said first lens group and said fourth lens group are fixed,
• said second lens group moves to the object side after the second lens group moves to an image side, and
• said third lens group linearly moves to the object side upon changing a magnification of the zoom lens from a wide-angle end to a telephoto end.