Zoom lens and electronic device including the same

A zoom lens comprising, sequentially from an object side:

• a first lens group having a negative refractive power;
• a second lens group having a positive refractive power;
• a third lens group having a negative refractive power;
• and
• a fourth lens group having a positive refractive power,
• wherein, when zoom is varied from a wide angle end to a telephoto end, positions of the first lens group and the fourth lens group are fixed with respect to an optical axis,
• wherein the second lens group comprises, sequentially from the object side, a second A lens group having a positive refractive power and a second B lens group having a positive refractive power, and the second B lens group is moved in the optical axis direction to perform a focusing function from an object that is disposed in a close range to an object that is disposed at infinity, and
• wherein the third lens group is shifted in a direction perpendicular to the optical axis to correct image blur.