A zoom lens including front and rear elements, the front elements is set up so that the front elements are disposed at a position to satisfy the formula:.gtoreq..function. ##EQU00001## where a length from the top of the front elements on the optical axis to the front main point of the front elements: Ha.sub.1, a main point of the front elements: HH.sub.1, a length from the rear main point of the front elements to the front main point of the rear elements: L, a main point of the rear elements: HH.sub.2, a focal length of the front elements: f.sub.1, a focal length of the rear elements: f.sub.2, a length from the object at the time of photography to the front main point of the front elements: m, and a length from the top of the front elements on the optical axis to the imaging plane: T.sub.1.