Image blur correction apparatus, interchangeable lens, camera body, image blur correction method, and storage medium

An image blur correction method executed by an image blur correction apparatus including a communication device configured to communicate with a second image blur correction apparatus that controls a second correction member configured to correct image blur of an image capturing apparatus, the image blur correction method comprising:

• detecting shake occurring in the image capturing apparatus;
• based on the shake, determining a first correction amount that is for correcting the image blur;
• transmitting the first correction amount to the second image blur correction apparatus via the communication device, the second image blur correction apparatus controlling the second correction member based on the first correction amount;
• acquiring a correction error caused by a communication delay of the first correction amount in the communication device;
• and
• controlling a first correction member configured to correct image blur of the image capturing apparatus so as to reduce the correction error,
• wherein in the acquiring, the correction error is acquired based on a difference between the first correction amount currently determined by the determination unit and a fourth correction amount corresponding to the first correction amount previously determined and transmitted.

A non-transitory computer-readable storage medium which stores a program for causing an image blur correction apparatus to execute an image blur correction method, the image blur correction apparatus including a communication device configured to communicate with a second image blur correction apparatus that controls a second correction member configured to correct image blur of an image capturing apparatus, the image blur correction method comprising:

• detecting shake occurring in the image capturing apparatus;
• based on the shake, determining a first correction amount that is for correcting the image blur;
• transmitting the first correction amount to the second image blur correction apparatus via the communication device, the second image blur correction apparatus controlling the second correction member based on the first correction amount;
• acquiring a correction error caused by a communication delay of the first correction amount in the communication device;
• and
• controlling a first correction member configured to correct image blur of the image capturing apparatus so as to reduce the correction error,
• wherein in the acquiring, the correction error is acquired based on a difference between the first correction amount currently determined by the determination unit and a fourth correction amount corresponding to the first correction amount previously determined and transmitted.