Lens control apparatus and interchangeable lens including lens control apparatus

An interchangeable lens comprising:

• an optical system including a first and a second focus lens, and a zoom lens;
• a lens controller operable to control driving of the optical system, wherein the lens controller includes:
• a first driver operable to drive the first focus lens;
• a second driver operable to drive the second focus lens;
• a controller operable to control the first and second drivers;
• and
• a storage unit operable to store first tracking data and second tracking data, the first tracking data being information that associates a position of the first focus lens with a position of the zoom lens, and the second tracking data being information that associates a position of the second focus lens with the position of the zoom lens, and
• when the controller drives the first and second focus lenses, the controller:
• determines a first target position, the first target position being a movement target position of the first focus lens;
• determines a positional relationship of the first target position with respect to the first tracking data, based on the first tracking data and the position of the zoom lens;
• determines a second target position based on the positional relationship of the first target position, the second tracking data, and the position of the zoom lens, the second target position being a movement target position of the second focus lens;
• and
• controls the first driver to allow the first focus lens to move to the first target position, and controls the second driver to allow the second focus lens to move to the second target position.