Imaging apparatus having focal correction, and control method for the same

Patent metadata

Field	Value
Publication number	US-9307218-B2
Application number	US-201313750575-A
Country	US
Kind code	B2
Filing date	Jan 25, 2013
Priority date	Jan 31, 2012
Publication date	Apr 5, 2016
Grant date	Apr 5, 2016

Abstract

An imaging apparatus includes an autofocus function, and performs focus adjustment by displacing a focus lens to an in-focus opposition. A focal correction calculation unit calculates a focal correction amount using at least one type of information selected from the diaphragm information used for exposure adjustment, positional information for the zoom lens, and positional information for the focus lens. The focal correction amount is further revised, and processing is executed to suppress coloring on the subject image resulting from chromatic aberration. The correction amount after revision is sent to a focal adjustment unit and the focal lens is driven and controlled by the lens control unit.

First claim

What is claimed is:

1. An imaging apparatus that includes an optical imaging system that has a moveable lens for focus adjustment and a moveable lens for adjustment of angle of view, the imaging apparatus executing focus adjustment by displacing the moveable lens for focus adjustment to an in-focus position, the imaging apparatus comprising:
an imaging element configured to perform photoelectric conversion upon reception of light from a subject;
a control unit configured to cont…

Assignees

• Canon Kk

Inventors

• Maruyama Naoki

Classifications

• H04N23/663

  Electricity · mapped topic

• H04N23/673

  Electricity · mapped topic

• H04N5/772 Primary

  Electricity · mapped topic

• H04N25/611

  Electricity · mapped topic

• H04N23/12

  Electricity · mapped topic