To provide a zoom lens provided with a large diameter covering a large viewing angle in which a magnification rate is not less than 3.5 folds and an F number is about F2.8.

In this zoom lens provided with a first lens group G1 provided with positive refractive power, a second lens group G2 provided with negative refractive power and one or plural lens groups including a third lens group G3 on the image side in the order from an object side and having power varied by changing the air interval of the first lens group G1 and the second lens group G2, the second lens group G2 is provided with a negative lens component L1 provided with a negative lens turning a concave surface to the image side, the negative lens component L2 turning the concave surface to the object side, a positive lens component L3, the negative lens component L4 and the positive lens component L5 in the order from the object side and satisfies the conditional expression (1) 0<n4-n5<0.4 where n4 is the refractive index to a (d) line of the negative lens, in the negative lens component L4 and n5 is the refractive index to the (d) line of a positive lens in the positive lens component L5.