Control apparatus, image pickup apparatus, control method, and non-transitory computer-readable storage medium which are capable of correcting defocus amount

An image pickup apparatus comprising:

• an image sensor configured to photoelectrically convert an object image formed via an image pickup optical system to output an image signal;
• a defocus amount detector configured to detect a defocus amount by using a focus signal obtained via the image pickup optical system;
• a light source detector configured to detect light source information relating to a light source that illuminates an object by using light from the object obtained via the image pickup optical system;
• a non-transitory memory storing a program;
• and
• a processor configured to execute the program stored in the non-transitory memory to implement an acquisition unit, a setting unit, and a control unit,
• wherein:
• the acquisition unit is configured to acquire the light source information from the light source detector,
• the setting unit is configured to set correction information of the defocus amount corresponding to the light source information according to an operation by a user,
• the non-transitory memory is configured to store the light source information and the correction information correlated with each other, and
• the control unit is configured to perform focus control based on the correction information correlated with the light source information, and
• wherein the control unit is configured to:
• determine whether first light source information obtained in photographing and first correction information correlated with the first light source information are stored in the non-transitory memory as the light source information and the correction information, respectively, and
• perform the focus control by using the first correction information when the first light source information and the first correction information correlated with the first light source information are stored in the non-transitory memory.

A control method comprising the steps of:

• acquiring light source information relating to a light source that illuminates an object;
• setting correction information of a defocus amount corresponding to the light source information according to an operation by a user;
• storing, in a memory, the light source information and the correction information correlated with each other;
• and
• performing focus control based on the correction information correlated with the light source information,
• wherein the step of performing the focus control includes:
• determining whether first light source information obtained in photographing and first correction information correlated with the first light source information are stored in the memory as the light source information and the correction information, respectively, and
• performing the focus control by using the first correction information when the first light source information and the first correction information correlated with the first light source information are stored in the memory.

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

• acquiring light source information relating to a light source that illuminates an object;
• setting correction information of a defocus amount corresponding to the light source information according to an operation by a user;
• storing, in a memory, the light source information and the correction information correlated with each other;
• and
• performing focus control based on the correction information correlated with the light source information,
• wherein the step of performing the focus control includes:
• determining whether first light source information obtained in photographing and first correction information correlated with the first light source information are stored in the memory as the light source information and the correction information, respectively, and
• performing the focus control by using the first correction information when the first light source information and the first correction information correlated with the first light source information are stored in the memory.