The zoom lens consists of, in order from the object side, a first lens group that has a positive refractive power, a second lens group that has a positive refractive power, and a subsequent group. During zooming, a spacing between the first lens group and the second lens group changes, and a spacing between the second lens group and the subsequent group changes. The subsequent groups include a focusing group that moves during focusing.

A zoom lens consists of, in order from the object side, a positive first lens group that is fixed during magnification change, at least three movable lens groups that are moved during magnification change, and a positive end lens group that is disposed at the most image side and is fixed during magnification change. The at least three movable lens groups include, in order from the object side, a positive lens group, a negative lens group, and a negative lens group. The first lens group includes at least two negative lenses, where the most object-side negative lens has a meniscus shape with the convex surface toward the object side, and a first-n lens, which is at least one negative lens of the rest of the negative lenses of the first lens group, satisfies given condition expressions (1) and (2).

A zoom lens consists of, in order from the object side, a positive first lens group that is fixed during magnification change, at least two movable lens groups that are moved during magnification change, and a positive end lens group that is disposed at the most image side and is fixed during magnification change. The first lens group consists of, in order from the object side, a negative first-a lens group that is fixed during focusing, a positive first-b lens group that is moved during focusing, and a positive first-c lens group. The first-a lens group includes at least two negative lenses, where the most object-side negative lens has a meniscus shape with the convex surface toward the object side, and a first-n lens, which is at least one negative lens of the rest of the negative lenses of the first-a lens group, satisfies given condition expressions (1) to (3).

The variable magnification optical system consists of, in order from an object side to an image side, a first lens group that has a positive refractive power, a plurality of lens groups, and a final lens group that has a positive refractive power. During changing magnification, a spacing between the first lens group and the lens group closest to the object side among the plurality of lens groups changes, all spacings between adjacent lens groups in the plurality of lens groups change, and a spacing between the lens group closest to the image side and the final lens group among the plurality of lens groups changes.

A zoom lens includes, in order from an object side, a positive first lens unit configured not to move for zooming, two or more intermediate lens units configured to move for zooming, and a positive rear lens unit. A distance between each pair of adjacent lens units changes for zooming. The first lens unit includes, in order from the object side, a negative first sub lens unit configured not to move for focusing, a positive second sub lens unit configured to move for focusing, and a positive third sub lens unit. Specific conditional expressions are satisfied with respect to a focal length and a thickness of the first lens unit, focal lengths of the zoom lens at a wide angle end and a telephoto end, a backfocus, and a focal length of the first sub lens unit.

The imaging lens includes, in order from a position closest to an object side to an image side: a front lens group that has a positive refractive power and is immovable during focusing; a stop that is disposed subsequent to the front lens group; a first focus lens group that has a positive refractive power; a second focus lens group that has a negative refractive power; and a final lens group that has a positive refractive power, is disposed closest to the image side, and is immovable during focusing. During focusing from an infinite distance object to a short range object, the first focus lens group and the second focus lens group move to increase a mutual distance therebetween.

The zoom lens consists of, in order from an object side: a first lens group that has a positive refractive power; a middle group that includes a plurality of lens groups each moving by changing a spacing with an adjacent lens group during zooming; and a final lens group that remains stationary during zooming and has a positive refractive power. Among the plurality of lens groups that move during zooming in the middle group, an image side movable lens group, which is a lens group disposed closest to the image side, has a negative refractive power.

Provided is a zoom lens consisting of, in order from an object side to an image side: a positive front lens unit configured not to move for zooming; a plurality of magnification-varying lens units including two magnification-varying lens units having negative refractive powers configured to move for zooming; and a positive rear lens unit configured not to move for zooming, in which a focal length of the front lens unit, a focal length of a magnification-varying lens unit having a negative refractive power and arranged closest to the object side in the plurality of magnification-varying lens units, a focal length of a magnification-varying lens unit having a negative refractive power and arranged closest to the image side in the plurality of magnification-varying lens units, and a focal length of the rear lens unit are suitably set.

The imaging lens includes, in order from a position closest to an object side to an image side: a front lens group that has a positive refractive power and is immovable during focusing; a stop that is disposed subsequent to the front lens group; a first focus lens group that has a positive refractive power; a second focus lens group that has a negative refractive power; and a final lens group that has a positive refractive power, is disposed closest to the image side, and is immovable during focusing. During focusing from an infinite distance object to a short range object, the first focus lens group and the second focus lens group move to increase a mutual distance therebetween.

Provided is a zoom lens consisting of, in order from an object side to an image side: a positive front lens unit configured not to move for zooming; a plurality of magnification-varying lens units including two magnification-varying lens units having negative refractive powers configured to move for zooming; and a positive rear lens unit configured not to move for zooming, in which a focal length of the front lens unit, a focal length of a magnification-varying lens unit having a negative refractive power and arranged closest to the object side in the plurality of magnification-varying lens units, a focal length of a magnification-varying lens unit having a negative refractive power and arranged closest to the image side in the plurality of magnification-varying lens units, and a focal length of the rear lens unit are suitably set.