A zoom lens comprising: a first lens group having a positive refractive power, a second lens group having a negative refractive power, a third lens group having a positive refractive power, and a fourth lens group having a positive refractive power, which are disposed in order from an object side to an image side; and an aperture stop disposed at an object side of the third lens group, wherein when changing the magnification of the zoom lens from a wide angle end to a telephoto end, an interval between the first and second lens groups increases, an interval between the second and third lens groups decreases, and an interval between the third and fourth lens groups increases; the first lens group includes at least a negative lens, a positive lens, and a positive lens, which are disposed in order from the object side; and the second lens group includes at least a negative lens, a positive lens, and a negative lens, which are disposed in order from the object side, characterized in that: the following conditions are satisfied: − 1.1 < R 12 / R 52 × F W < − 0.85; − 3 < ν 1 − ν 2 / ν 6 − ν 5 < − 1.5, where R 12 is a curvature radius of an image side surface of a first lens of the first lens group from the object side, R 52 is a curvature radius of an image side surface of a first positive lens of the second lens group from the object side, F W is a focal length of the zoom lens at the wide angle end, ν 1 is an Abbe number of a first lens of the first lens group from the object side, v 2 is an Abbe number of a second lens of the first lens group from the object side, v 5 is an Abbe number of a second lens of the second lens group from the object side, and v 6 is an Abbe number of a third lens of the second lens group from the object side. a first lens group having a positive refractive power, a second lens group having a negative refractive power, a third lens group having a positive refractive power, and a fourth lens group having a positive refractive power, which are disposed in order from an object side to an image side; and an aperture stop disposed at an object side of the third lens group, wherein when changing the magnification of the zoom lens from a wide angle end to a telephoto end, an interval between the first and second lens groups increases, an interval between the second and third lens groups decreases, and an interval between the third and fourth lens groups increases; the first lens group includes at least a negative lens, a positive lens, and a positive lens, which are disposed in order from the object side; and the second lens group includes at least a negative lens, a positive lens, and a negative lens, which are disposed in order from the object side, characterized in that: the following conditions are satisfied: − 1.1 < R 12 / R 52 × F W < − 0.85; − 3 < ν 1 − ν 2 / ν 6 − ν 5 < − 1.5, where R 12 is a curvature radius of an image side surface of a first lens of the first lens group from the object side, R 52 is a curvature radius of an image side surface of a first positive lens of the second lens group from the object side, F W is a focal length of the zoom lens at the wide angle end, ν 1 is an Abbe number of a first lens of the first lens group from the object side, v 2 is an Abbe number of a second lens of the first lens group from the object side, v 5 is an Abbe number of a second lens of the second lens group from the object side, and v 6 is an Abbe number of a third lens of the second lens group from the object side. the following conditions are satisfied: − 1.1 < R 12 / R 52 × F W < − 0.85; − 3 < ν 1 − ν 2 / ν 6 − ν 5 < − 1.5, where R 12 is a curvature radius of an image side surface of a first lens of the first lens group from the object side, R 52 is a curvature radius of an image side surface of a first positive lens of the second lens group from the object side, F W is a focal length of the zoom lens at the wide angle end, ν 1 is an Abbe number of a first lens of the first lens group from the object side, v 2 is an Abbe number of a second lens of the first lens group from the object side, v 5 is an Abbe number of a second lens of the second lens group from the object side, and v 6 is an Abbe number of a third lens of the second lens group from the object side.