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Image pickup apparatus
| Details |
Inventors: Tanaka, Taeko; Kaneda, Kitahiro;
Assignee: Canon Kabushiki Kaisha (Tokyo, JP)
Primary Examiner: Peng; John K.
Assistant Examiner: Ho; Tuan V.
Attorney, Agent or Firm: Robin, Blecker, Daley & Driscoll
An image pickup apparatus, which includes an eye point sensor for detecting an eye point in a frame, a calculation circuit for calculating average coordinates of the eye point in the frame detected by the eye point sensor, a setting circuit for setting a distance measurement frame at the average coordinates output from the calculation circuit, and a control circuit for controlling the size of the distance measurement frame according to the focal length, is disclosed. An image pickup apparatus, which includes a focus calculation circuit for detecting a focus state by detecting the dispersion range of an eye point, is also disclosed. |
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DETAILED DESCRIPTION The present invention has been made to solve the above-mentioned problems, and has as its first object to provide an image pickup apparatus, which can precisely and stably set a distance measurement frame at an eye point of a photographer in a frame, and can reliably focus on an object.
It is the second object of the present invention to provide an image pickup apparatus, which can pick up a dynamic image while stably and reliably focusing on a moving object.
In order to achieve these objects, according to a preferred aspect of the present invention, there is disclosed an image pickup apparatus for performing a focus adjustment operation on the basis of a signal within a distance measurement frame set on an image pickup frame, comprising detection means for detecting an eye point of a photographer in the image pickup frame, calculation means for calculating average coordinates of the eye point coordinates detected by the detection means, and setting means for setting a position of the distance measurement frame at the average coordinates output from the calculation means.
It is the third object of the present invention to provide an image pickup apparatus, which can realize optimal focus adjustment characteristics with respect to an object by changing the size of a distance measurement frame set at the eye point coordinates of a photographer according to an image pickup state.
In order to achieve the above object, according to another preferred aspect of the present invention, there is disclosed an image pickup apparatus for performing a focus adjustment operation on the basis of a signal within a distance measurement frame set on an image pickup frame, comprising detection means for detecting an eye point of a photographer in the image pickup frame, calculation means for calculating average coordinates of the eye point coordinates detected by the detection means, setting means for setting a position of the distance measurement frame at the average coordinates output from the calculation means, and control means for changing a size of the distance measurement frame set by the setting means according to an image pickup state
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Image Analysis 
