Imaging apparatus having autofocus function, and control method for the imaging apparatus
AssigneeCanon Kabushiki Kaisha
InventorHiroyuki Ogino
Life of this patent
Estimating the term…
Abstract
An apparatus includes an imaging unit, a focus detection unit configured to detect a focusing state of a focus lens, a designation unit configured to receive a designation of an in-screen position of an object displayed on a display screen, and a control unit configured to control a movable range of the focus lens when the focusing state is detected by the focus detection unit such that if the designation unit does not designate the in-screen position of the object, the movable range is set to be a first range and, if the designation unit designates the in-screen position of the object, the movable range is set to a second range that is wider than the first range.
Claims36
An apparatus comprising:
- an imaging unit configured to perform photoelectric conversion on light from an object light incident thereon via a focus lens to acquire an image signal;
- a focus detection unit configured to detect a focusing state of the focus lens based on the image signal acquired while the focus lens is moved;
- a designation unit configured to receive a designation of an in-screen position of an object displayed on a display screen;
- and
- a control unit configured to control a movable range of the focus lens when the focusing state is detected such that if the designation unit does not designate the in-screen position of the object, the movable range is set to be a first range and, if the designation unit designates the in-screen position, the movable range is set to a second range that is wider than the first range.
An apparatus comprising:
- an imaging unit configured to perform photoelectric conversion on light from an object light incident thereon via a focus lens to acquire an image signal;
- a focus detection unit configured to detect a focusing state of the focus lens based on the image signal acquired while the focus lens is moved;
- a sensing unit configured to sense whether an object image displayed on a display screen is touched;
- and
- a control unit configured to control a movable range of the focus lens when the focusing state is detected such that if the sensing unit does not sense that the display screen is touched, the movable range is set to a first range and, if the sensing unit senses that the display screen is touched, the movable range of the focus lens is set to a second range that is wider than the first range.
A method for controlling an apparatus configured to perform photoelectric conversion on light from an object light incident thereon via a focus lens to acquire an image signal, the method comprising:
- detecting a focusing state of the focus lens based on the image signal acquired while the focus lens is moved;
- receiving a designation of an in-screen position of an object displayed on a display screen;
- and
- controlling a movable range of the focus lens when the focusing state is detected such that if the in-screen position of the object is not designated, the movable range is set to a first range and, if the in-screen position of the object is designated, the movable range is set to a second range that is wider than the first range.
A method for controlling an apparatus configured to perform photoelectric conversion on light from an object light incident thereon via a focus lens to acquire an image signal, the method comprising:
- detecting a focusing state of the focus lens based on the image signal acquired while the focus lens is moved;
- sensing whether an object image displayed on a display screen is touched;
- and
- controlling a movable range of the focus lens when the focusing state is detected such that if it is not sensed that the display screen is touched, the movable range is set to a first range and, if it is sensed that the display screen is touched, the movable range of the focus lens is set to a second range that is wider than the first range.
An apparatus comprising:
- a focus detection unit configured to detect a focusing state of light from an object incident thereon via a focus lens so that an object-image is in focus on an imaging unit;
- a designation unit configured to receive a designation of an in-screen position of an object displayed on a display screen;
- and
- a control unit configured to control, under a condition that a movable range of the focus lens is set to be a first range where the movable range is limited to a part of a focusable range, a movable range of the focus lens when the focusing state is detected such that if the designation unit does not designate the in- screen position of the object, the movable range is set to be a first range and, if the designation unit designates the in-screen position, the movable range is set to a second range that is wider than the first range.
An apparatus comprising:
- a focus detection unit configured to detect a focusing state of light from an object incident thereon via a focus lens so that an object-image is in focus on an imaging unit;
- a sensing unit configured to sense whether an object image displayed on a display screen is touched;
- and
- a control unit configured to control, under a condition that a movable range of the focus lens is set to be a first range where the movable range is limited to a part of a focusable range, a movable range of the focus lens when the focusing state is detected such that if the sensing unit does not sense that the display screen is touched, the movable range is set to a first range and, if the sensing unit senses that the display screen is touched, the movable range of the focus lens is set to a second range that is wider than the first range.
A method for controlling an apparatus configured to perform photoelectric conversion on light from an object incident thereon via a focus lens to acquire an image signal, the method comprising:
- detecting a focusing state of light from an object incident thereon via a focus lens so that an object-image is in focus on an imaging unit;
- receiving a designation of an in-screen position of an object displayed on a display screen;
- and
- controlling, under a condition that a movable range of the focus lens is set to be a first range where the movable range is limited to a part of a focusable range, a movable range of the focus lens when the focusing state is detected such that if the in-screen position of the object is not designated, the movable range is set to a first range and, if the in-screen position of the object is designated, the movable range is set to a second range that is wider than the first range.
A method for controlling an apparatus configured to perform photoelectric conversion on light from an object incident thereon via a focus lens to acquire an image signal, the method comprising:
- detecting a focusing state of light from an object incident thereon via a focus lens so that an object-image is in focus on an imaging unit;
- sensing whether an object image displayed on a display screen is touched;
- and
- controlling, under a condition that a movable range of the focus lens is set to be a first range where the movable range is limited to a part of a focusable range, a movable range of the focus lens when the focusing state is detected such that if it is not sensed that the display screen is touched, the movable range is set to a first range and, if it is sensed that the display screen is touched, the movable range of the focus lens is set to a second range that is wider than the first range.
Dependencies are inferred from the claim text.