A zoom lens capable of correcting camera shake and being reduced in size and weight, comprising five groups of lenses respectively having positive, negative, positive, negative, positive refractive powers, the second lens group (12) varying power, the fifth lens group (15) adjusting focusing. The third lens group (13) is moved in a direction perpendicular to the optical axis when correcting camera shake. When lens power on the object side of a cemented lens in the first lens group (11) is ₁₁, lens power on the image plane side ₁₂, the Abbe number of a lens on the object side _d11, and the Abbe number of a lens on the image plane side _d12, the condition of the following Expression 82 is satisfied:

-75_d11d12(₁₁+₁₂)/(_11d12+_12d11)-50.Expression 82.