Abstract: A lens apparatus attachable to an image pickup apparatus includes an imaging optical system, and a communicator configured to communicate with the image pickup apparatus. The communicator transmits to the image pickup apparatus first information used to calculate a depth of field and second information used to normalize the depth of field into a display format of a display unit of the image pickup apparatus.

Abstract: A control apparatus for use with an optical apparatus includes an acquiring unit configured to acquire focus information from the optical apparatus, and a control unit configured to control, according to the focus information, movements of a first focus lens and an element that are independently movable in an optical axis direction. The control unit performs first driving that moves the element so as to reduce an image-plane moving amount caused by a movement of the first focus lens in simultaneously moving the first focus lens and the element.

Abstract: A control apparatus includes at least one processor configured to execute instructions to function as a first controller that automatically adjusts a focus lens to a focusing position, a second controller that adjusts the focus lens on the basis of a user operation quantity, and a third controller that drives the focus lens. The first controller and the second controller effectively work in a first drive area of the focus lens. The first controller is disabled in a second drive area of the focus lens. The third controller drives the focus lens on the basis of changes of the second drive area.

Abstract: A camera body includes a plurality of electric contacts in a first set and a second set. When a lens apparatus is mounted to the camera body, the first set of the electric contacts comes into contact with an electric contact disposed on the lens apparatus before coming into contact with the second set of electric contacts.

Abstract: A lens apparatus attachable to an image pickup apparatus includes an imaging optical system, and a communicator configured to communicate with the image pickup apparatus. The communicator transmits to the image pickup apparatus first information used to calculate a depth of field and second information used to normalize the depth of field into a display format of a display unit of the image pickup apparatus.

Abstract: A lens apparatus is mountable to a camera body. The camera body has multiple electric contacts. Of these multiple electric contacts, when mounting the lens apparatus to the camera body, electric contacts used for second communication or third communication come into contact with an electric contact provided to the lens apparatus before electric contacts used for first communication, when mounting the lens apparatus to the camera body.

Abstract: A control apparatus includes at least one processor configured to execute instructions to function as a first controller that automatically adjusts a focus lens to a focusing position, a second controller that adjusts the focus lens on the basis of a user operation quantity, and a third controller that drives the focus lens. The first controller and the second controller effectively work in a first drive area of the focus lens. The first controller is disabled in a second drive area of the focus lens. The third controller drives the focus lens on the basis of changes of the second drive area.

Abstract: A control apparatus includes at least one processor configured to execute instructions to function as a first controller that automatically adjusts a focus lens to a focusing position, a second controller that adjusts the focus lens on the basis of a user operation quantity, and a third controller that drives the focus lens. The first controller and the second controller effectively work in a first drive area of the focus lens. The first controller is disabled in a second drive area of the focus lens. The third controller drives the focus lens on the basis of changes of the second drive area.

Abstract: A control apparatus includes at least one processor configured to execute instructions to function as a first controller that automatically adjusts a focus lens to a focusing position, a second controller that adjusts the focus lens on the basis of a user operation quantity, and a third controller that drives the focus lens. The first controller and the second controller effectively work in a first drive area of the focus lens. The first controller is disabled in a second drive area of the focus lens. The third controller drives the focus lens on the basis of changes of the second drive area.

Abstract: A lens apparatus is mountable to a camera body. The camera body has multiple electric contacts. Of these multiple electric contacts, when mounting the lens apparatus to the camera body, electric contacts used for second communication or third communication come into contact with an electric contact provided to the lens apparatus before electric contacts used for first communication, when mounting the lens apparatus to the camera body.

Abstract: A camera body includes a plurality of electric contacts in a first set and a second set. When a lens apparatus is mounted to the camera body, the first set of the electric contacts comes into contact with an electric contact disposed on the lens apparatus before coming into contact with the second set of electric contacts.

Abstract: A lens apparatus is mountable to a camera body. The camera body has multiple electric contacts. Of these multiple electric contacts, when mounting the lens apparatus to the camera body, electric contacts used for second communication or third communication come into contact with an electric contact provided to the lens apparatus before electric contacts used for first communication, when mounting the lens apparatus to the camera body.

Abstract: An accessory apparatus includes a first electrical contact configured to receive power from an image capturing apparatus in a state of being attached to the image capturing apparatus, a second electrical contact disposed on a predetermined direction A side of the first electrical contact, configured to be connected to a predetermined electrical contact connected to a reference potential of the image capturing apparatus in the state of being attached to the image capturing apparatus, and configured to be unconnected to the reference potential during detachment from the image capturing apparatus, and a capacitor device connected to the first electrical contact and the second electrical contact. Further, the accessory apparatus includes a reduction unit configured to reduce charge stored in the capacitor device during the detachment from the image capturing apparatus.

Abstract: There is provided an image capturing apparatus on which, and from which, an accessory is mountable and dismountable by relative rotation in a circumferential direction. The image capturing apparatus includes a plurality of terminals disposed in a circumferential direction of a mount and configured to be used in electrical connection, and a terminal holder. Each of the plurality of terminals is electrically connected to a corresponding terminal of the accessory. A first terminal of the terminals used in communication at a first voltage level and a second terminal of the terminals used in communication at a second voltage level lower than the first voltage level are disposed on the same stage of the terminal holder. The second terminal is a terminal connected to ground via a first resistor. The first terminal is disposed adjacent to the second terminal.

Abstract: A lens apparatus is mountable to a camera body. The camera body has multiple electric contacts. Of these multiple electric contacts, when mounting the lens apparatus to the camera body, electric contacts used for second communication or third communication come into contact with an electric contact provided to the lens apparatus before electric contacts used for first communication, when mounting the lens apparatus to the camera body.

Abstract: A lens apparatus is mountable to a camera body. The camera body has multiple electric contacts. Of these multiple electric contacts, when mounting the lens apparatus to the camera body, electric contacts used for second communication or third communication come into contact with an electric contact provided to the lens apparatus before electric contacts used for first communication, when mounting the lens apparatus to the camera body.

Abstract: An accessory apparatus includes a first electrical contact configured to receive power from an image capturing apparatus in a state of being attached to the image capturing apparatus, a second electrical contact disposed on a predetermined direction A side of the first electrical contact, configured to be connected to a predetermined electrical contact connected to a reference potential of the image capturing apparatus in the state of being attached to the image capturing apparatus, and configured to be unconnected to the reference potential during detachment from the image capturing apparatus, and a capacitor device connected to the first electrical contact and the second electrical contact. Further, the accessory apparatus includes a reduction unit configured to reduce charge stored in the capacitor device during the detachment from the image capturing apparatus.

Abstract: A lens apparatus is mountable to a camera body. The camera body has multiple electric contacts. Of these multiple electric contacts, when mounting the lens apparatus to the camera body, electric contacts used for second communication or third communication come into contact with an electric contact provided to the lens apparatus before electric contacts used for first communication, when mounting the lens apparatus to the camera body.

Abstract: There is provided an image capturing apparatus on which, and from which, an accessory is mountable and dismountable by relative rotation in a circumferential direction. The image capturing apparatus includes a plurality of terminals disposed in a circumferential direction of a mount and configured to be used in electrical connection, and a terminal holder. Each of the plurality of terminals is electrically connected to a corresponding terminal of the accessory. A first terminal of the terminals used in communication at a first voltage level and a second terminal of the terminals used in communication at a second voltage level lower than the first voltage level are disposed on the same stage of the terminal holder. The second terminal is a terminal connected to ground via a first resistor. The first terminal is disposed adjacent to the second terminal.