A control apparatus includes an acquirer (129a) that acquires a first signal and a second signal that correspond to output signals of a first photoelectric converter and a second photoelectric converter, respectively, the first and second photoelectric converters receiving light beams passing through different pupil regions of an image capturing optical system from each other, and a calculator (129b) that calculates a correlation value of the first signal and the second signal to calculate a defocus amount based on the correlation value, and the calculator corrects the correlation value based on a light receiving amount of at least one of the first photoelectric converter and the second photoelectric converter.

A lens control apparatus for moving a lens in an optical axis direction, including: a stepping motor for driving the lens; a controller for obtaining a drive amount on the basis of an input target position, instructing a rotational position of the stepping motor to perform drive control, wherein the controller obtains, in accordance with a first drive amount when the stepping motor is driven to a current position, a second drive amount from the current position to a target position, a third drive amount obtained by correcting the second drive amount, and instructs a rotational position on the basis of the third drive amount.

An electronic device and method thereof are provided. An electronic device includes a UWB communication module configured to transmit a first ranging message, at a first transmission interval, for measuring at least one of a distance to or a direction of an external electronic device; a display; and a processor configured to display, on the display, an image of a first magnification in correspondence to the measured distance to and/or direction of the external electronic device; adjust the magnification of the image to a second magnification; and control, based on the second magnification, the UWB communication module to transmit a second ranging message, to the external electronic device, at a second transmission interval.

Lens barrel according to the present exemplary embodiment is provided with lens unit, stationary frame, focus ring, focus grip, and a fixing section. Lens unit has an optical system. Stationary frame supports lens unit to be movable in a direction of optical axis X of the optical system. Focus ring is disposed on an outer circumferential side of lens unit, and is rotated when focus adjustment is manually performed. Focus grip is provided to protrude outwardly from focus ring, and operated for rotating focus ring. The fixing section fixes focus ring to stationary frame when focus adjustment is automatically performed. The fixing section has fixing button which is disposed on focus grip and operated for fixing focus ring to stationary frame.

Methods and apparatus for implementing a camera having a depth which is less than the maximum length of the outer lens of at least one optical chain of the camera are described. In some embodiments a light redirection device, e.g., a mirror, is used to allow a relatively long optical chain with a relatively large non-circular outer lens. In some embodiments the light redirection device has a depth, e.g., front of camera to back of camera dimension, which is less than the maximum length of the aperture of the outer lens in the aperture's direction of maximum extent. Multiple optical chains with non-circular outer lenses arranged in different directions may and in some embodiments are used to capture images with the captured images being combined to generate a composite image.

Disclosed is a variable-zoom imaging apparatus that includes: i) imaging optics configured to form an image in an imaging area of an object positioned in an object area; ii) an adjustable aperture stop to adjustably set a numerical aperture NA for the image formed by the imaging optics; iii) an electronic detector comprising an array of detector elements positioned in the imaging area to detect the image; and iv) image processing circuitry coupled to the electronic detector to produce a digital representation of the image based on signals from at least some of the detector elements. The image processing circuitry produces the digital representation with a different magnification of the object m for each of a plurality of different numerical apertures for the image set by the adjustable aperture stop.

A drive controller for controlling driving of a movable optical member of a lens apparatus, including: a position acquirer acquiring a position of the movable optical member; an instruction inputter receiving a first driving command for driving the movable optical member from an external apparatus; and a controller determining a driving amount so that the movable optical member is driven to a position different from a position corresponding to the first driving command based on the first driving command and the position of the movable optical member every unit time, and outputs a second driving command to the lens apparatus so that the movable optical member is driven by the driving amount within the unit time, wherein the controller sets the driving amount within the unit time larger as a difference between the position corresponding to the first driving command and the position of the movable optical member becomes larger.

A lens unit L100 is removably mounted on an image pickup apparatus generating control information used for a vibration control that vibrates a correction lens L105 and moves a vibration center of the correction lens L105, includes an image pickup optical system including a magnification varying lens L102 and the correction lens L105, a storage unit storing first information indicating a relation between positions of the magnification varying lens L102 and the correction lens L105, and a lens controller performing a predetermined control in which the correction lens L105 moves in accordance with the movement of the magnification varying lens L102, and the lens controller sends information relating to the magnification varying operation to the image pickup apparatus, and overlaps the vibration control of the correction lens L105 based on the control information in accordance with the information relating to the magnification varying operation with the predetermined control.

A lens control apparatus and a control method thereof are disclosed. The lens control apparatus includes a microprocessor which obtains a correction defocus amount so that the correction defocus amount obtained by the microprocessor when a zoom speed is a first speed is greater than the correction defocus amount obtained by the microprocessor when a zoom speed is a second speed which is less than the first speed.

In order to perform an autofocus operation, a controller of a focus control device selects subject information relating to the current magnification from subject information including previous focus states stored in a storage unit in advance, and determines a focus lens driving range on the basis of a focal length associated with the selected subject information. After the focus lens driving range is determined, a contrast-based autofocus operation is performed within that driving range. Therefore, it is possible to reduce the time taken to obtain the focus state and improve reliability of the focusing.