Abstract: A zoom lens construction of the type including from the object side a first lens group having positive refractive power, a second lens group having negative refractive power, a third lens group having positive refractive power, and a fourth lens group having positive refractive power. The first and third lens groups being held stationary, the second lens group being movable along the optical axis for zooming operation, and the fourth lens group being movable to maintain a plane of focus in compensation for variations in subject distance and shifts of focal point resulting from zooming operations. The zoom lens comprising a stop provided between the second and third lens groups movably along the optical axis, and arranged to be located closer to the imaging plane at the longest focal length of a zooming range than at the shortest focal length thereof.