Canon Kabushiki Kaisha

Nobuhiro Shibata

Toshihiro Ogawa

Shuichi Terada

Yosuke Fukai

Teruhiko Ueyama

Hiroaki Kurisu

An image stabilization apparatus that reduces image blurring by moving a correction mechanism in accordance with a motion of an image capture apparatus is disclosed. The apparatus controls a movement of the correction mechanism in accordance with a target position of the correction mechanism, the target position being intended to reduce the image blurring. The apparatus detects a vibration of a preset frequency included in the motion, the preset frequency being higher than a first frequency of a vibration caused by a camera shake. The apparatus, in a case where the vibration of the preset frequency has been detected, further reduces a control gain used for controlling the movement of the correction mechanism compared to a case where the vibration of the preset frequency has not been detected.

Image stabilization apparatus and method of controlling the same

An apparatus includes a calculation unit configured to calculate a target correction amount based on a shake, a stabilization control unit configured to provide control on driving of a sensor in a direction intersecting an optical axis of a pickup optical system, based on the target correction amount, an autofocusing control unit configured to provide control on focusing based on an image signal output from the sensor, and a setting unit configured to set a limit value for the target correction amount based on a characteristic of the pickup optical system and focusing accuracy of the autofocusing unit. The setting unit is configured to change the limit value depending on the pickup condition, and is capable of setting a first limit value based on the characteristic and a second limit value based on the focusing accuracy.

Control apparatus, image pickup apparatus, control method, and memory medium

There is provided an image blur correction control apparatus for correcting image blur of an image capturing apparatus through sharing with a second image blur correction control apparatus in accordance with a predetermined sharing rule. In a case where a first characteristic of the first detector is better than a second characteristic of a second detector included in the second image blur correction unit, a first deciding unit decides a first cutoff frequency based on shake information detected by the first detector, a transmitting unit transmits the first cutoff frequency to the second image blur correction control apparatus as a cutoff frequency to be used by the second image blur correction control apparatus, and a filtering unit performs filter processing on the shake information detected by the first detector. The first cutoff frequency is applied in the filter processing.

Image blur correction control apparatus, camera body, lens unit, image blur correction control method, and storage medium

A focus detection apparatus comprising: a setting unit that selects and sets one of a plurality of predetermined focus detection areas which include a first focus detection area and a second focus detection area located in a periphery of a screen in an image shooting mode for shooting the moon; a first calculation unit that calculates an in-focus position in the first focus detection area based on a phase difference between a pair of focus detection signals having a parallax output from an image sensor; and a second calculation unit that calculates an in-focus position in the second focus detection area based on contrast of image signals output from the image sensor.

Focus detection apparatus and method

An imaging apparatus includes a storage unit configured to store beforehand a focus position serving as a reference for a predetermined subject, and a unit configured to drive a focus lens at a position away by a predetermined depth from the focus position serving as a reference that is stored, and calculate a defocus amount.

Imaging apparatus and control method of the same

An image stabilization apparatus includes: a driving control unit that drives an image stabilization unit to optically correct image blur of an object image caused by a shake of an apparatus, the image stabilization unit moving the object image on a screen of an image sensor; and a focus control unit that performs control to drive a focusing lens in coordination with an operation of the image stabilization unit, the focusing lens being used to perform focus adjustment in an imaging optical system.

Image stabilization apparatus, method of controlling the same, and storage medium

An image forming apparatus which is able to shoot high-quality images while improving image stabilization performance. An optical device which corrects for image blurring is moved in a direction different from an optical axis. Focusing is controlled by calculating a shape of a contrast using AF evaluation values at respective positions of a focus lens, which moves in the direction of the optical axis, at predetermined intervals and using a position of the focus lens at which the contrast is at its peak as a position at which a bundle of rays comes to a focus on a light-incident plane of the image pickup device. During the focusing control, positions of the focus lens obtained when the AF evaluation values were obtained or the obtained AF evaluation values are corrected according to detected positions of the optical device in a direction perpendicular to the optical axis.

Image pickup apparatus with image stabilizing function, and control method therefor

An image stabilizer includes a first optical corrector moving along a direction different from an optical axis to correct an image shake, a second optical corrector moving along a direction different from the optical axis to correct an image shake, a controller moving at least one of the first and second optical correctors to correct an image shake, and a first position detector detecting information about a movement position of the first optical corrector. The controller performs image shake correction of the first optical corrector without image shake correction of the second optical corrector when the information about the movement position of the first optical corrector is equal to or less than a predetermined value, and performs image shake correction of the second optical corrector when the information about the movement position of the first optical corrector is more than the predetermined value.

Image stabilizer, image pickup apparatus having the same, and control method of image stabilizer

An imaging apparatus includes a correction member movable within a plane orthogonal to an optical axis, a vibration detection unit configured to detect vibrations applied to the imaging apparatus, a filter configured to pass a frequency of a predetermined band of vibration signals from the vibration detection unit, a calculation unit configured to calculate a vibration correction amount based on an output from the filter, a driving control unit configured to drive the correction member by using the vibration correction amount to perform vibration correction, and an intermediate value changing unit configured to change an intermediate value of the filter unit to a predetermined value immediately before exposure.

Imaging apparatus and imaging method

An imaging apparatus includes an imaging unit configured to convert an object image into an image signal, a vibration detection unit configured to detect a vibration and output information about the vibration, a correction unit moving in a plane orthogonal to an optical axis configured to correct the vibration, a target position calculation unit configured to calculate a target position to which the correction unit is moved based on the information about the vibration output from the vibration detection unit, a position detection unit configured to detect a present position of the correction unit, a calculation unit configured to calculate a difference between the present position and the target position, and a determination unit configured to determine whether a force acting on the imaging apparatus is a gravitational force based on the information about the vibration and a cycle of the vibration.

An image capturing apparatus includes a calculation unit which converts shaking detected by a sensor unit into a shaking cancel amount, a correction/driving unit which drives a correction unit using the shaking cancel amount in a plane perpendicular to the optical axis, and corrects blurring of an image formed on an image capturing unit, a zoom position detection unit which detects the current zoom position of a zoom lens, and a center point change unit which changes a center point serving as a movable center of the correction unit in accordance with the zoom position set at either end of the zoom range, or an arbitrary position therebetween. This enables a position of a correction unit to be set which allows optimal image visibility and image blurring correction irrespective of the zoom state.

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Inagi, Japan

Nobuhiro Shibata