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Apparatus and method executed by apparatus

專利號
US11968446B2
公開日期
2024-04-23
申請人
CANON KABUSHIKI KAISHA(JP Tokyo)
發(fā)明人
Yumi Takao; Nobutaka Mizuno; Junichi Imamiya
IPC分類
H04N23/67; H04N23/63
技術(shù)領(lǐng)域
focus,image,defocus,in,optical,lens,unit,301l,301r,display
地域: Tokyo

摘要

An apparatus comprising a sensor capable of generating a signal pair used in focus detection. The apparatus obtains, based on a defocus amount obtained using the signal pair, a focus distance of a lens unit that is mounted to the apparatus and adjusts a focus distance of the lens unit based on the obtained focus distance. When the lens unit is a multi-scopic lens unit having a plurality of optical systems having different axes, the apparatus obtains the focus distance using an adjustment value obtained based on an axis position that is a position on the sensor through which an axis of the multi-scopic lens unit passes.

說明書

Note that in the present embodiment, the focus guide function is provided based on the defocus amount and direction obtained by using a configuration for image plane phase difference-based focus detection. However, the basic technical spirit of the present embodiment does not depend on the method of obtaining the degree of focus in the focus detection region. Therefore, a focus guide function may be provided for each imaging optical system based on other evaluation values that depend on the degree of focus of the image formed by the individual imaging optical system, such as, for example, contrast evaluation values or the like.

Focus Guide Display Control Processing

The focus guide display control processing executed by the system control unit 218 will be described next with reference to the flowchart in FIG. 11. This processing is realized by the system control unit 218 loading a program recorded in the non-volatile memory 220 into the system memory 219 and executing the program. The focus guide display control processing is executed in parallel with the live view display processing.

The focus guide display control processing described here does not depend on the number of optical axes (number of imaging optical systems) included in the mounted lens unit. The focus guide display control processing may be executed for each image formed by the imaging optical system.

權(quán)利要求

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