Title:
撮像装置、撮像装置の制御方法およびフォーカス制御プログラム
Document Type and Number:
Japanese Patent JP6548626
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To obtain an excellent focus state in the evaluation of a picked-up image when image blur affects easily.SOLUTION: An imaging device 120 includes: focus detection means 129 for detecting the focus state of an imaging optical system and generating focus detection information; correction value acquisition means 125 for acquiring a correction value for correcting the focus detection information; and control means 125 for conducting a focus control, using the focus detection information corrected by the correction value. The correction value includes a first evaluation bandwidth as a variable, which is a spacial frequency for evaluating the focus state of a picked-up image generated by imaging by the imaging optical system. The first evaluation bandwidth when a first exposure time as an exposure time at imaging is longer than a first specific time is smaller than that when the first exposure time is shorter than the first specific time.SELECTED DRAWING: Figure 1
Inventors:
Mizuno Nobutaka
Application Number:
JP2016225554A
Publication Date:
July 24, 2019
Filing Date:
November 18, 2016
Export Citation:
Assignee:
Canon Inc
International Classes:
G02B7/28; G02B7/34; G02B7/36; G03B13/36; G03B17/14; H04N5/232
Domestic Patent References:
| JP2016057516A | ||||
| JP2012080411A | ||||
| JP2001061148A | ||||
| JP2014102290A | ||||
| JP2012133127A | ||||
| JP2015138200A | ||||
| JP2015222411A |
Attorney, Agent or Firm:
Ryosuke Fujimoto
Atsushi Mizumoto
Hirayama Tomoya
Atsushi Mizumoto
Hirayama Tomoya