Abstract: A zoom lens includes, in order from an object side to an image side, a first lens unit having a negative refractive power and a second lens unit having a positive refractive power. A distance between the first lens unit and the second lens unit changes during zooming. The second lens unit includes an aperture stop and two or more negative lenses. The zoom lens satisfies specified conditional expressions.

Abstract: An interchangeable lens apparatus attachable to an imaging apparatus configured to move an image sensor in an image stabilization includes an imaging optical system, a storage unit configured to store image circle information including a relationship between an imaging condition and position information of an image circle of the imaging optical system, and a transmission unit configured to transmit at least part of the image circle information to the imaging apparatus.

Abstract: An interchangeable lens apparatus attachable to an imaging apparatus configured to move an image sensor in an image stabilization includes an imaging optical system, a storage unit configured to store image circle information including a relationship between an imaging condition and position information of an image circle of the imaging optical system, and a transmission unit configured to transmit at least part of the image circle information to the imaging apparatus.

Abstract: A zoom lens includes, in order from an object side to an image side, a first lens unit having a negative refractive power and a second lens unit having a positive refractive power. A distance between adjacent lens units changes during zooming. The first lens unit includes two cemented lenses and each of the two cemented lenses includes a positive lens. Predetermined conditions are satisfied by the zoom lens.

Abstract: An interchangeable lens apparatus attachable to an imaging apparatus configured to move an image sensor in an image stabilization includes an imaging optical system, a storage unit configured to store image circle information including a relationship between an imaging condition and position information of an image circle of the imaging optical system, and a transmission unit configured to transmit at least part of the image circle information to the imaging apparatus.

Abstract: An interchangeable lens apparatus attachable to an imaging apparatus configured to move an image sensor in an image stabilization includes an imaging optical system, a storage unit configured to store image circle information including a relationship between an imaging condition and position information of an image circle of the imaging optical system, and a transmission unit configured to transmit at least part of the image circle information to the imaging apparatus.

Abstract: A zoom lens includes, in order from object side, a negative first unit, a positive second unit, a negative third unit, and a positive fourth unit, wherein, for zooming to telephoto end, the second unit moves toward object side, the third unit moves and an interval between each pair of adjacent units is changed, wherein, at telephoto end as compared to wide angle end, the interval between the first and second units is smaller, the interval between the second and third units is larger, the interval between the third and fourth units is larger, and the fourth unit is positioned closer to image side, wherein the third unit consists of a single optical element, wherein the fourth unit includes plural lenses arranged at intervals, and wherein focal lengths of the third and fourth units and the interval between the third and fourth units at telephoto end are appropriately set.

Abstract: A zoom lens includes, in order from an object side to an image side, a first lens unit having a negative refractive power and a second lens unit having a positive refractive power. A distance between the first lens unit and the second lens unit changes during zooming. The second lens unit includes an aperture stop and two or more negative lenses. The zoom lens satisfies specified conditional expressions.

Abstract: A zoom lens including, in order from an object side, a positive first unit configured not to be moved for zooming, a negative second unit configured to be moved for zooming, a positive third unit configured to be moved for zooming, a zooming lens group including a lens unit and configured to be moved for zooming, and a positive unit configured not to be moved for zooming, wherein the third unit includes positive and negative lenses, the second and third units move to an image side for zooming from a wide-angle end to a telephoto end, and focal lengths at the wide-angle end and the telephoto end, a zoom ratio, a space between the second unit third units and is maximum in a zoom range from the telephoto end to a predetermined focal length, and a space between the second third units at the telephoto end are properly set.

Abstract: A zoom lens includes in order from an object side to an image side, a positive first lens unit that is not moved for zooming, a negative second lens unit that is moved during zooming, at least one zooming lens unit that is moved during zooming, a stop, and a positive fixed lens unit that is not moved for zooming. The first lens unit includes in order from the object side to the image side, a first lens sub-unit that is not moved for focusing, a positive second lens sub-unit that is moved toward the object side when focusing to an object at short distance from an object at infinite distance, and a positive third lens sub-unit that is moved during focusing. The second lens sub-unit includes a negative meniscus lens having a convex surface facing the image side.

Abstract: A zoom lens which include, in order from an object side: a unit A including a unit configured to move for zooming; an aperture stop; and a positive unit B configured not to move for zooming, in which the unit B includes front and rear units with an air interval therebetween longest between the aperture stop and an image plane of the zoom lens, in which the front unit consists of, in order from the object side, a positive first front unit, a negative second front unit configured to move perpendicular to an optical axis of the zoom lens to perform image stabilization, and a third front unit having a positive refractive power, in which a lateral magnification of the second front unit, focal lengths of the first front unit, the second front unit, and the third front unit are set appropriately.

Abstract: A wide attachment which is detachably attached to an object side of a lens apparatus and in which a focal length of the lens apparatus is shifted to a short focal length side. The wide attachment is formed of a single meniscus lens having a negative refractive power. The lens has an aspherical surface. The following conditional expressions are satisfied: ?5.2<?(r1+r2)/(r1?r2)<?1.3, and 1.50<nd<1.53, where r1 represents a curvature radius of a surface on an object side of the lens, r2 represents a curvature radius of a surface on an image side of the lens, and nd represents a refractive index of a material constituting the lens with respect to d-line, wherein a curvature radius of the aspherical surface is defined as a curvature radius of a spherical surface passing through a lens vertex and a maximum effective diameter of the aspherical surface.

Abstract: A zoom lens includes, in order from object side, a negative first unit, a positive second unit, a negative third unit, and a positive fourth unit, wherein, for zooming to telephoto end, the second unit moves toward object side, the third unit moves and an interval between each pair of adjacent units is changed, wherein, at telephoto end as compared to wide angle end, the interval between the first and second units is smaller, the interval between the second and third units is larger, the interval between the third and fourth units is larger, and the fourth unit is positioned closer to image side, wherein the third unit consists of a single optical element, wherein the fourth unit includes plural lenses arranged at intervals, and wherein focal lengths of the third and fourth units and the interval between the third and fourth units at telephoto end are appropriately set.

Abstract: A zoom lens includes, in order from the object side, a first lens unit having a positive refractive power that does not move for zooming, second to fourth lens units each having a negative refractive power that moves for zooming, and a relay lens unit having a positive refractive power and being closest to the image side that does not move for zooming. The second lens unit moves to the image side from the wide-angle end to the telephoto end. When a focal length fx determined by a focal length fw of the zoom lens at the wide-angle end and a zoom ratio Z is fx=fw×Z0.38, the zoom lens satisfies 0.05<L2 min/L2w<0.98, where L2 min is a minimum distance between the second and third lens units in a zoom range from the wide-angle end to the focal length fx, and L2w is a distance between them at the wide-angle end.

Abstract: An interchangeable lens apparatus attachable to an imaging apparatus configured to move an image sensor in an image stabilization includes an imaging optical system, a storage unit configured to store image circle information including a relationship between an imaging condition and position information of an image circle of the imaging optical system, and a transmission unit configured to transmit at least part of the image circle information to the imaging apparatus.

Abstract: A zoom lens including, in order from an object side, a positive first unit configured not to be moved for zooming, a negative second unit configured to be moved for zooming, a positive third unit configured to be moved for zooming, a zooming lens group including a lens unit and configured to be moved for zooming, and a positive unit configured not to be moved for zooming, wherein the third unit includes positive and negative lenses, the second and third units move to an image side for zooming from a wide-angle end to a telephoto end, and focal lengths at the wide-angle end and the telephoto end, a zoom ratio, a space between the second unit third units and is maximum in a zoom range from the telephoto end to a predetermined focal length, and a space between the second third units at the telephoto end are properly set.

Abstract: A zoom lens which include, in order from an object side: a unit A including a unit configured to move for zooming; an aperture stop; and a positive unit B configured not to move for zooming, in which the unit B includes front and rear units with an air interval therebetween longest between the aperture stop and an image plane of the zoom lens, in which the front unit consists of, in order from the object side, a positive first front unit, a negative second front unit configured to move perpendicular to an optical axis of the zoom lens to perform image stabilization, and a third front unit having a positive refractive power, in which a lateral magnification of the second front unit, focal lengths of the first front unit, the second front unit, and the third front unit are set appropriately.

Abstract: A zoom lens includes, in order from the object side, a first lens unit having a positive refractive power that does not move for zooming, second to fourth lens units each having a negative refractive power that moves for zooming, and a relay lens unit having a positive refractive power and being closest to the image side that does not move for zooming. The second lens unit moves to the image side from the wide-angle end to the telephoto end. When a focal length fx determined by a focal length fw of the zoom lens at the wide-angle end and a zoom ratio Z is fx=fw×Z0.38, the zoom lens satisfies 0.05<L2min/L2w<0.98, where L2min is a minimum distance between the second and third lens units in a zoom range from the wide-angle end to the focal length fx, and L2w is a distance between them at the wide-angle end.

Abstract: A wide attachment which is detachably attached to an object side of a lens apparatus and in which a focal length of the lens apparatus is shifted to a short focal length side. The wide attachment is formed of a single meniscus lens having a negative refractive power. The lens has an aspherical surface. The following conditional expressions are satisfied: ?5.2<?(r1+r2)/(r1?r2)<?1.3, and 1.50<nd<1.53, where r1 represents a curvature radius of a surface on an object side of the lens, r2 represents a curvature radius of a surface on an image side of the lens, and nd represents a refractive index of a material constituting the lens with respect to d-line, wherein a curvature radius of the aspherical surface is defined as a curvature radius of a spherical surface passing through a lens vertex and a maximum effective diameter of the aspherical surface.

Abstract: A zoom lens includes in order from an object side to an image side, a positive first lens unit that is not moved for zooming, a negative second lens unit that is moved during zooming, at least one zooming lens unit that is moved during zooming, a stop, and a positive fixed lens unit that is not moved for zooming. The first lens unit includes in order from the object side to the image side, a first lens sub-unit that is not moved for focusing, a positive second lens sub-unit that is moved toward the object side when focusing to an object at short distance from an object at infinite distance, and a positive third lens sub-unit that is moved during focusing. The second lens sub-unit includes a negative meniscus lens having a convex surface facing the image side.