Control apparatus, control method, and non-transitory computer-readable storage medium for performing focus control
AssigneeCanon Kabushiki Kaisha
InventorHideyuki Hamano
Life of this patent
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Abstract
A control apparatus (125) includes an acquirer (125d) configured to acquire first information relating to a peak position of a spatial frequency that an image pickup optical system transmits for each spatial frequency, and a processor (125e, 125f, 125g) configured to calculate second information relating to a first evaluation band used for processing of image pickup signals and a second evaluation band used for processing of focus detection signals, the processor is configured to calculate third information relating to a weighting for each spatial frequency, and the processor is configured to calculate correction information of focus detection based on the first, second, and third information.
Claims12
A control apparatus comprising:
- an acquirer configured to acquire first information relating to a peak position of a spatial frequency that an image pickup optical system transmits for each spatial frequency;
- and
- a processor configured to calculate second information relating to a first evaluation band used for processing of image pickup signals and a second evaluation band used for processing of focus detection signals,
- wherein the processor is configured to:
- calculate third information relating to a weighting for each spatial frequency, and
- calculate correction information of focus detection based on the first, second, and third information.
A control method comprising:
- determining first information relating to a peak position of a spatial frequency that an image pickup optical system transmits for each spatial frequency;
- calculating second information relating to a first evaluation band used for processing of image pickup signals and a second evaluation band used for processing of focus detection signals;
- calculating third information relating to a weighting for each spatial frequency;
- and
- calculating correction information of focus detection based on the first, second, and third information.
A non-transitory computer-readable storage medium storing a program which causes a computer to execute a process comprising:
- determining first information relating to a peak position of a spatial frequency that an image pickup optical system transmits for each spatial frequency;
- calculating second information relating to a first evaluation band used for processing of image pickup signals and a second evaluation band used for processing of focus detection signals;
- calculating third information relating to a weighting for each spatial frequency, and
- calculating correction information of focus detection based on the first, second, and third information.
Dependencies are inferred from the claim text.