Image capture apparatus and control method therefor

Patent metadata

Field	Value
Publication number	US-8994874-B2
Application number	US-201314107508-A
Country	US
Kind code	B2
Filing date	Dec 16, 2013
Priority date	Dec 25, 2012
Publication date	Mar 31, 2015
Grant date	Mar 31, 2015

Abstract

Subject distances of a plurality of subject areas included in a captured image are computed based on a plurality of focus evaluation values indicating in-focus positions of a plurality of focus detection areas set in the captured image. Upon detection of a change in the captured image, the subject distances of the plurality of subject areas are re-computed by re-moving a focus lens. In this case, a driving range of the focus lens includes in-focus positions corresponding to previously-calculated subject distances and corresponds to the distribution of the previously-calculated subject distances.

First claim

What is claimed is:

1. An image capture apparatus comprising:
a focus detection unit that detects a plurality of focus evaluation values by moving a focus lens within a driving range, the plurality of focus evaluation values indicating in-focus positions of a plurality of focus detection areas;
a distance computation unit that computes subject distances of a plurality of subject areas included in a captured image based on the plurality of focus evaluation values; and
a change…

Assignees

• Canon Kk

Inventors

• Iwasaki Naoki

Classifications

• H04N23/676 Primary

  Electricity · mapped topic

• H04N23/635

  Electricity · mapped topic

• H04N23/673 Primary

  Electricity · mapped topic

• G03B13/36

  Physics · mapped topic

• H04N5/23212 Primary

  Electricity · mapped topic