Image capture system, image capturing apparatus, lens unit, control methods therefor, and storage medium

An image capture apparatus capable of attaching a lens apparatus, comprising:

• at least one processor or circuit configured to operate as:
• an image capturing unit configured to obtain a captured image;
• a synchronous signal generation unit configured to generate a synchronous signal for reading out the captured image from the image capturing unit;
• a communication unit configured to transmit first information corresponding to generation of a synchronous signal and second information corresponding to the time from a timing at which the synchronous signal is generated to a timing at which the communication unit transmits the first information to the lens apparatus, and to receive lens information from the lens apparatus.

A method of controlling a lens apparatus capable of being attached to an image capturing apparatus, comprising:

• obtaining lens information;
• receiving first information corresponding to generation of a synchronous signal of the image capturing apparatus and second information corresponding to time, and transmitting the lens information to the image capturing apparatus;
• acquiring third information corresponding to a timing at which the first information is received in the receiving;
• and
• determining, based on the second information and the third information, fourth information corresponding to timing for the obtaining of the lens information.

A lens apparatus capable of being attached to a control apparatus, comprising:

• at least one processor or circuit configured to operate as:
• an obtaining unit configured to obtain first information corresponding to an angular velocity;
• a communication unit configured to perform first communication, second communication and third communication,
• wherein the communication unit receives second information in the first communication,
• wherein the communication unit receives third information in the second communication, and
• wherein the communication unit transmits, in the third communication, the first information based on timing where the second information was received, the second information, and the third information.

A control apparatus capable of attaching a lens apparatus, comprising:

• at least one processor or circuit configured to operate as:
• a generation unit configured to generate a second information corresponding to a synchronous signal;
• a communication unit configured to perform first communication, second communication and third communication,
• wherein the communication unit transmits the second information in the first communication,
• wherein the communication unit transmits third information in the second communication,
• wherein the communication unit receives, in the third communication, first information based on timing where the second information was transmitted, the second information, and the third information.

A method of controlling a lens apparatus capable of being attached to a control apparatus, the method comprising:

• obtaining first information corresponding to an angular velocity;
• performing first communication, second communication and third communication;
• wherein in the first communication, second information is received,
• wherein in the second communication, third information is received, and
• wherein in the third communication, the first information is transmitted based on timing where the second information was received, the second information, and the third information.

A method of controlling a control apparatus capable of attaching a lens apparatus, the method comprising:

• generating a second information corresponding to a synchronous signal;
• performing first communication, second communication and third communication,
• wherein in the first communication, the second information is transmitted,
• wherein in the second communication, third information is transmitted, and
• wherein in the third communication, first information is received based on timing where the second information was transmitted, the second information, and the third information.