A zoom lens includes, in order from the object side, a positive first lens unit not moving for zooming, a negative second lens unit moving for zooming, positive third and fourth lens units moving for zooming, and a positive fifth lens unit not moving for zooming. Intervals between adjacent ones of the first to fifth lens units change for zooming. The third lens unit consists of positive, positive, and negative lenses in order from the object side. Appropriate settings are made to the zoom lens's focal lengths at the wide angle and telephoto ends, the lateral magnifications of the second lens unit at the wide angle and telephoto ends, the focal lengths of the third lens unit and the negative lens in the third lens unit, and the average Abbe number of the positive lenses and the Abbe number of the negative lens in the third lens unit.

A zoom lens consists of, in order from an object side, a positive first lens group, a negative second lens group, a positive third lens group, a positive fourth lens group, and a positive fifth lens group. During zooming, the first lens group and the fifth lens group are not moved, and the second lens group, the third lens group, and the fourth lens group are moved. The first lens group consists of one negative lens and five positive lenses in order from the object side to an image side. Predetermined conditional expressions related to a refractive index, an Abbe number, and a partial dispersion ratio of the negative lens of the first lens group are satisfied.

A zoom lens includes a positive first lens group, a negative second lens group, a positive third lens group, a positive fourth lens group, and a fifth lens group in order from an object side. In a case of zooming, an interval with an adjacent lens group is changed. The third lens group includes two positive lenses consecutively arranged in order from a side closest to the object side to an image side. The fifth lens group consists of a negative meniscus lens having a concave surface toward the object side and a positive lens having a convex surface toward the object side in order from the object side to the image side.

A zoom lens consists of, in order from an object side, a positive first lens group, a negative moving lens group, a first positive moving lens group, a second positive moving lens group, and a subsequent lens group including a stop. During zooming, the first lens group is not moved, and the negative moving lens group, the first positive moving lens group, and the second positive moving lens group are moved. The first positive moving lens group consists of a positive single lens and a cemented lens obtained by cementing a positive lens and a negative lens. The zoom lens satisfies a predetermined conditional expression.

A zoom lens consists of, in order from an object side, a positive first lens group, a negative second lens group, a positive third lens group, a positive fourth lens group, and a positive fifth lens group. During zooming, the first lens group and the fifth lens group are not moved, and the second lens group, the third lens group, and the fourth lens group are moved. The second lens group includes a negative lens closest to the object side. In a case where a focal length of the second lens group is denoted by f2 and a focal length of the negative lens of the second lens group closest to the object side is denoted by f21, the zoom lens satisfies 0.6<f2/f21<0.9.

A compact zooming optical system, an optical apparatus and a method for manufacturing the zooming optical system having a vibration reduction function, a high zooming ratio, a wide-angle view and superb optical performance are provided, the system including, in order from an object side: a first lens group G1 having positive refractive power; a second lens group G2 having negative refractive power; a third lens group G3 having positive refractive power; and a fourth lens group G4 having negative refractive power; upon zooming from a wide-angle end state to a telephoto end state, a distance between the first lens group G1 and the second lens group G2, a distance between the second lens group G2 and the third lens group G3 and a distance between the third lens group G3 and the fourth lens group G4 being respectively varied; the third lens group G3 having, in order from the object side, a first segment group G31 having positive refractive power and a second segment group G32; the second segment group G32 being moved to have a component in a direction perpendicular to the optical axis; and predetermined conditional expressions being satisfied.

Provided is a zoom lens including in order from an object side: a positive first lens unit not moving for a change in magnification; a negative second lens unit moving for a change in magnification; and two or three rear lens units having a positive refractive power as a whole, at least one of the rear lens units being configured to move for a change in magnification. The first lens unit includes a negative first lens sub-unit not moving for focusing, a positive second lens sub-unit moving for focusing, a third lens sub-unit not moving for focusing, and a positive fourth lens sub-unit moving for focusing. An amount of movement of the second lens sub-unit during focusing from infinity to a minimum object distance, and an amount of movement of the fourth lens sub-unit during focusing from infinity to the minimum object distance satisfy a specific conditional expression.

The present disclosure relates to zoom lenses and optical devices using the same. A zoom lens may include in order from an object side to an image side: a first lens group; a second lens group; a third lens group; a fourth lens group; and a fifth lens group; wherein the zoom lens satisfies the following conditions: 1.7f.sub.2/f.sub.w0.3, 0.7f.sub.3/f.sub.w2.1, 1.1f.sub.4/f.sub.w2.5, and TTL/f.sub.w6.5, wherein f.sub.2 denotes a focal length of the second lens group, f.sub.3 denotes a focal length of the third lens group, f.sub.4 denotes a focal length of the fourth lens group, f.sub.w denotes a focal length of the zoom lens, and TTL denotes a total track length of the zoom lens.

A zoom lens includes in order from an object side to an image side, a first lens unit having a positive refractive power; a second lens unit having a negative refractive power and configured to move for zooming; and at least one lens unit configured to move for zooming. The distance between each pair of the lens units adjacent to each other is changed for zooming. The first lens unit includes a negative lens and an Abbe number and a partial dispersion ratio of the negative lens are properly determined.

A first lens group (G1) having positive refractive power, a second lens group (G2) having negative refractive power, a third lens group (G3) having positive refractive power, a fourth lens group (G4) having negative refractive power, and a fifth lens group (G5) having positive refractive power are arranged in order from an object, and zooming is performed by changing distances between each lens group, and the first lens group (G1) is composed of three or more lenses, the fourth lens group (G4) is composed of two or less lenses, and the fifth lens group (G5) is composed of two or less lenses and moves to an image surface side upon zooming from a wide angle end state to a telephoto end state, and the following conditional expression (1) is satisfied.

8.40<f1/(f2)(1) where, f1 denotes a focal length of the first lens group (G1), and f2 denotes a focal length of the second lens group (G2).