Abstract: Provided is a lens apparatus, including: a lens barrel comprising an operation ring rotatable about an optical axis of an optical system to operate a movable optical member included in the optical system; and a driving apparatus engaging with the operation ring to drive the operation ring in a mounted state on the lens barrel, wherein the driving apparatus includes a first communication unit and an operation unit; the lens barrel includes a second communication unit; communication between the lens barrel and driving apparatus is established through the first and second communication units; in the mounted state, the first communication unit is disposed on a surface covering a part of an outer peripheral surface of the lens barrel; and is located on a object side relative to an operation unit arranged closest to an image side in an optical axis direction of the optical system on the driving apparatus.

Abstract: A lens apparatus includes: a fixed barrel with a movable barrel therein holding an optical element and moving along an optical axis; a first operating unit rotatable outside the fixed barrel; a movable stop in the fixed barrel, the stop including a movable unit rotatable to change aperture diameter; a second operating unit outside the fixed barrel; and transmission barrel engaging with the fixed barrel in the fixed barrel and connected to the second operating unit at a first portion and to the movable unit of the stop at a second portion, the transmission barrel having an opening between the first and second portions separated from each other in the optical axis direction, in which the movable barrel is connected to the first operating unit through the opening of the transmission barrel, and moves along the optical axis by a rotation-translation converting mechanism by rotating the first operating unit.

Abstract: Provided is a lens apparatus, including: a lens barrel comprising an operation ring rotatable about an optical axis of an optical system to operate a movable optical member included in the optical system; and a driving apparatus engaging with the operation ring to drive the operation ring in a mounted state on the lens barrel, wherein the driving apparatus includes a first communication unit and an operation unit; the lens barrel includes a second communication unit; communication between the lens barrel and driving apparatus is established through the first and second communication units; in the mounted state, the first communication unit is disposed on a surface covering a part of an outer peripheral surface of the lens barrel; and is located on a object side relative to an operation unit arranged closest to an image side in an optical axis direction of the optical system on the driving apparatus.

Abstract: A stop apparatus includes a stop operation member, a plurality of stop blades, each of which is provided with a pivot and a driving pin, a blade supporter that supports the stop blades in such a way that the stop blades are rotatable about the pivots of the respective stop blades, a first cam member provided with a first cam groove with which the driving pins of the respective stop blades engage, a second cam member provided with a second cam groove having a shape different from the first cam groove, and a driving force transmission member that transmits rotational driving force of the stop operation member to the second cam member. At least one of the driving pins engages with both the first cam groove and the second cam groove.

Abstract: A stop apparatus includes a stop operation member, a plurality of stop blades, each of which is provided with a pivot and a driving pin, a blade supporter that supports the stop blades in such a way that the stop blades are rotatable about the pivots of the respective stop blades, a first cam member provided with a first cam groove with which the driving pins of the respective stop blades engage, a second cam member provided with a second cam groove having a shape different from the first cam groove, and a driving force transmission member that transmits rotational driving force of the stop operation member to the second cam member. At least one of the driving pins engages with both the first cam groove and the second cam groove.

Abstract: A lens apparatus fixed barrel with a movable barrel therein holding an optical element and moving along an optical axis; a first operating unit rotatable outside the fixed barrel; a movable stop in the fixed barrel, the stop including a movable unit rotatable to change aperture diameter; a second operating unit outside the fixed barrel; and transmission barrel engaging with the fixed barrel in the fixed barrel and connected to the second operating unit at a first portion and to the movable unit of the stop at a second portion, the transmission barrel having an opening between the first and second portions separated from each other in the optical axis direction, in which the movable barrel is connected to the first operating unit through the opening of the transmission barrel, and moves along the optical axis by a rotation-translation converting mechanism by rotating the first operating unit.

Abstract: Provided is a lens apparatus capable of attaching an optical accessory on an object side thereof, in which: a lens protection lens barrel at an object-side end of the lens apparatus is retracted in an optical axis direction in response to attachment of an optical accessory support lens barrel supporting the optical accessory without changing placement of an optical system of the lens apparatus; and the lens protection lens barrel retracted in the optical axis direction is returned to a position before the attachment of the optical accessory support lens barrel by detaching the optical accessory support lens barrel from the lens apparatus.

Abstract: Provided is a lens apparatus capable of attaching an optical accessory on an object side thereof, in which: a lens protection lens barrel at an object-side end of the lens apparatus is retracted in an optical axis direction in response to attachment of an optical accessory support lens barrel supporting the optical accessory without changing placement of an optical system of the lens apparatus; and the lens protection lens barrel retracted in the optical axis direction is returned to a position before the attachment of the optical accessory support lens barrel by detaching the optical accessory support lens barrel from the lens apparatus.

Abstract: An autofocus lens apparatus is disclosed which is capable of changing a focus target area in position and size without degrading the operability of manual focusing when taking images with an autofocus function. The autofocus lens apparatus comprises an operating member which is placed outside a lens barrel and movable to change the focus target area, a detector which detects the movement of the operating member, and a controller which changes at least one of the position and size of the focus target area on the basis of a signal from the detector.

Abstract: An autofocus lens apparatus is disclosed which is capable of changing a focus target area in position and size without degrading the operability of manual focusing when taking images with an autofocus function. The autofocus lens apparatus comprises an operating member which is placed outside a lens barrel and movable to change the focus target area, a detector which detects the movement of the operating member, and a controller which changes at least one of the position and size of the focus target area on the basis of a signal from the detector.