IP Library › Granted Patent US 11,212,433
Granted Patent B2
US 11,212,433 · App. 16/457,682 · Granted Dec 28, 2021

Image capture apparatus and control method thereof

Inventor: Toshiaki Ueguri (Tokyo, JP)
Assignee: CANON KABUSHIKI KAISHA
H04N5/232133H04N5/232123H04N5/2356
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Quick Facts
Patent No.
US 11,212,433
App. No.
16/457,682
Granted
Dec 28, 2021
Kind
B2
Abstract

A method of an apparatus includes detecting a focusing state based on an output from a sensor, setting a step width of a focus position, and controlling to perform a plurality of times of image capturing based on a result of focus detection by the detecting and the set step width by the setting. In the setting, a step width from an in-focus position based on the result of focus detection by the detecting toward an infinity side is set to a value different from a step width from the in-focus position based on the result of focus detection by the detecting toward a closest side.

Claims (33)

1. An apparatus comprising:

a sensor having a plurality of pixels, each of which can photoelectrically convert light fluxes that have passed through different pupil regions of an optical system including a focus lens and output a pair of signals for focus detection;

a memory device that stores a set of instructions; and

at least one processor that executes the set of instructions to function as:

a first focus detection unit that detects a focusing state based on an output from the sensor,

a setting unit that sets a step width of a position of the focus lens,

a control unit that controls to perform a plurality of times of image capturing based on the set step width,

a display unit that displays an item for selecting a step width of the position of the focus lens for performing the plurality of times of image capturing,

wherein, in a case where a user selects a step width, the setting unit sets a step width of the position of the focus lens based on the step width selected by the user using an in-focus position based on a result of the focus detection by the first focus detection unit as a reference, and

wherein the setting unit sets a step width from the reference toward a closest side to a value smaller than a step width from the reference toward the infinity side.

2. The apparatus according to claim 1 , further comprising:

a second focus detection unit that acquires a focus evaluation value indicating a contrast of an image based on an output from the sensor and performs focus detection based on the focus evaluation value; and

a determination unit that acquires the focus evaluation value and determines an in-focus position when an in-focus position moves in an image capturing from an in-focus position based on a result of focus detection by the second focus detection unit toward the closest side.

3. A method of an apparatus having a sensor having a plurality of pixels, each of which photoelectrically converts light fluxes that have passed through different pupil regions of an optical system including a focus lens and output a pair of signals for focus detection, the method comprising:

detecting a focusing state based on an output from the sensor;

setting a step width of a position of the focus lens;

controlling to perform a plurality of times of image capturing based on the set step width by the setting; and

displaying an item for selecting a step width of the position of the focus lens for performing the plurality of times of image capturing,

wherein, in a case where a user selects a step width, a step width of the position of the focus lens is set based on the step width selected by the user using an in-focus position based on a result of the focus detection as a reference, and

wherein a step width from the reference toward the closest side is set to a value smaller than a step width from the reference toward the infinity side.

4. The method according to claim 3 , further comprising:

acquiring a focus evaluation value indicating a contrast of an image based on an output from the sensor and performing focus detection based on the focus evaluation value; and

acquiring the focus evaluation value and determining an in-focus position when an in-focus position moves in an image capturing from an in-focus position based on a result of focus detection by the acquiring a focus evaluation value indicating a contrast of an image toward the closest side.

5. A non-transitory computer readable storage medium storing a program of instructions for causing a computer to perform a method of an apparatus having a sensor having a plurality of pixels, each of which photoelectrically converts light fluxes that have passed through different pupil regions of an optical system including a focus lens and output a pair of signals for focus detection, the method comprising:

detecting a focusing state based on an output from the sensor;

setting a step width of a position of the focus lens;

controlling to perform a plurality of times of image capturing based on the set step width by the setting; and

displaying an item for selecting a step width of the position of the focus lens for performing the plurality of times of image capturing,

wherein, in a case where a user selects a step width, a step width of the position of the focus lens is set based on the step width selected by the user using an in-focus position based on a result of the focus detection as a reference, and

wherein a step width from the reference toward the closest side is set to a value smaller than a step width from the reference toward the infinity side.

6. The non-transitory computer readable storage medium according to claim 5 , further comprising:

acquiring a focus evaluation value indicating a contrast of an image based on an output from the sensor and performing focus detection based on the focus evaluation value; and

acquiring the focus evaluation value and determining an in-focus position when an in-focus position moves in an image capturing from an in-focus position based on a result of focus detection by the acquiring a focus evaluation value indicating a contrast of an image toward the closest side.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Oct 7, 2019
From: UEGURI, TOSHIAKI
To: CANON KABUSHIKI KAISHA
Reel/Frame 050634/0320 →
Priority Claims (1)
JP JP2018-126164 · Jul 2, 2018 · national
Continuity (1)
Related Publication 20200007783A1 · Jan 2, 2020