Abstract: A zoom lens assembly wherein first and second lens elements are moved simultaneously to effect zooming operation and wherein the first lens element is moved separately from the second lens element to effect focusing operation. A zoom operation member and a focusing operation member are operable through the structure of the elements of the assembly to effect, respectively, zooming and focusing operation and the arrangement of the invention permits simplification of the construction of the assembly wherein the desired operations may be accomplished.

Abstract: Axial movement of a focusing lens holder is controlled by an output signal of automatic distance measuring means for automatically finding the distance from the means to an object. A lens mounting is selectively operable either by the drive control of the focusing lens holder within the lens barrel by the output signal from the automatic distance measuring means or by the manual drive of the lens holder for visual and manual focusing.