Control apparatus, image capturing apparatus, control method, and non-transitory computer-readable storage medium

An image capturing apparatus comprising:

• a first sensor configured to receive a light ray formed by an image capturing optical system;
• a first focus detector configured to perform focus detection by phase difference detection using the first sensor;
• a second sensor configured to receive a light ray formed by the image capturing optical system;
• a second focus detector configured to perform focus detection by phase difference detection using the second sensor;
• a calculator configured to calculate correction information corresponding to a difference between a first signal from the first detector and a second signal from the second detector;
• a memory configured to store the correction information calculated by the calculator;
• a controller configured to perform focus control based on the first signal in a first area and perform the focus control based on the second signal and the correction information stored in the memory in a second area;
• and
• an identifier configured to identify an object,
• wherein the memory is configured to store the correction information for each object identified by the identifier.

A control method comprising the steps of:

• performing first focus detection by phase difference detection using a first sensor that receives a light ray formed by an image capturing optical system;
• performing second focus detection by phase difference detection using a second sensor that receives a light ray formed by the image capturing optical system;
• calculating correction information corresponding to a difference between a first signal obtained by the first detection and a second signal obtained by the second detection;
• storing the calculated correction information;
• performing focus control based on the first signal in a first area;
• performing the focus control based on the second signal and the stored correction information;
• and
• identifying an object,
• wherein the step of storing the correction information includes storing the correction information for each object identified by the identifier.

A non-transitory computer-readable storage medium which stores a program causing a computer to execute a process comprising the steps of:

• performing first focus detection by phase difference detection using a first sensor that receives a light ray formed by an image capturing optical system;
• performing second focus detection by phase difference detection using a second sensor that receives a light ray formed by the image capturing optical system;
• calculating correction information corresponding to a difference between a first signal obtained by the first detection and a second signal obtained by the second detection;
• storing the calculated correction information;
• performing focus control based on the first signal in a first area;
• performing the focus control based on the second signal and the stored correction information;
• and
• identifying an object,
• wherein the step of storing the correction infolliiation includes storing the correction information for each object identified by the identifier.