Illumination apparatus capable of making determination on radiating direction of flash and control method therefor

An illumination apparatus including a first body that has a light-emitter and a second body that rotatably holds the first body in a predetermined direction, the illumination apparatus comprising:

• a memory configured to store programs;
• and
• at least one processor configured to execute the programs stored in the memory to function as:
• a determination unit configured to, based on a difference between an angle of the first body with respect to the second body and a target angle to which the first body is to be moved, determine whether there is an angular deviation of the first body,
• wherein the determination unit is configured to differentiate a sensitivity for determining whether there is the angular deviation of the first body according to the target angle.

A control method for an illumination apparatus including a first body that has a light-emitter and a second body that rotatably holds the first body in a predetermined direction, the method comprising:

• obtaining a difference between a present angle of the first body with respect to the second body and a target angle to which the first body is to be moved;
• and
• based on whether the obtained difference is smaller than a threshold value, determining whether there is an angular deviation of the first body,
• wherein the threshold value varies with the target angle.