Image sensing apparatus providing driving direction of focus lens for attaining in-focus state and control method therefor

A control method for an image sensing apparatus comprising an image sensing unit, and a display unit configured to display image signals, the control method comprising:

• obtaining first image signals every set number of frames and second image signals in frames other than frames in which the first image signals are obtained by the image sensing unit, wherein a focus lens is driven so that the image sensing unit obtains the second image signals at different focus lens positions respectively;
• acquiring from the second image signals focus evaluation values each indicating a focus state of an image;
• determining a driving direction of driving the focus lens for an in-focus state on the basis of the obtained focus evaluation values;
• and
• displaying images corresponding to the first image signals obtained by the image sensing unit and the determined driving direction.

An image sensing apparatus comprising:

• an image sensing unit configured to obtain first images with a focus lens at a preset position and second images between the first images with the focus lens at different positions;
• a control unit configured to control to drive the focus lens for image sensing by the image sensing unit;
• an acquisition unit configured to acquire from image signals of the second images focus evaluation values each indicating a focus state of an image;
• a determination unit configured to determine a driving direction of driving the focus lens for an in-focus state on the basis of the focus evaluation values, and
• a display unit configured to display the first images obtained by the image sensing unit and the determined driving direction.

A control method for an image sensing apparatus comprising an image sensing unit, and a display unit configured to display image signals, the control method comprising:

• obtaining first images with a focus lens at a preset position and second images between the first images with the focus lens at different positions;
• acquiring from image signals of the second images focus evaluation values each indicating a focus state of an image;
• determining a driving direction of driving the focus lens for an in-focus state on the basis of the obtained focus evaluation values;
• and
• displaying the first images obtained by the image sensing unit and the determined driving direction.

An image sensing apparatus comprising:

• an image sensing unit configured to obtain an image;
• an operation unit configured to input a request to manually drive a focus lens;
• a control unit configured to control to drive the focus lens for image sensing by the image sensing unit on the basis of a request from the operation unit;
• a determination unit configured to determine closeness to an in-focus state in a direction of driving the focus lens on the basis of focus evaluation values acquired from image signals while the control unit controls to drive the focus lens for image sensing by the image sensing unit on the basis of a request from the operation unit;
• and
• a display unit configured to display an image obtained by the image sensing unit and the result of the determination.

A control method for an image sensing apparatus comprising an image sensing unit, and a display unit configured to display an image, the control method comprising:

• inputting a request to manually drive a focus lens;
• controlling to drive the focus lens for image sensing by the image sensing unit on the basis of the input request;
• determining closeness to an in-focus state in a direction of driving the focus lens on the basis of focus evaluation values acquired from images while controlling to drive the focus lens for image sensing by the image sensing unit on the basis of the input request;
• and
• displaying an image obtained by the image sensing unit and the result of the determination.