Imaging apparatus and shutter driving method

A shutter driving method, comprising:

• generating, by a motor mechanism, a first traveling torque of an opening and closing blade of a mechanical shutter by electric conduction to a coil,
• wherein the mechanical shutter is in an incident light path of a light incident on an imaging element of an imaging apparatus;
• generating, by a spring mechanism, a second traveling torque of the opening and closing blade of the mechanical shutter;
• controlling, by a control unit, a travel of the opening and closing blade based on the first traveling torque and the second traveling torque;
• determining, by the control unit, a reception of a user input to select an imaging mode, wherein the imaging mode is a mode to brighten a center of an image more than an end portion of the image in an up-down direction;
• and
• setting, by the control unit, at least one of a current value in the coil or a time length from a start of the electric conduction to the coil to start of the travel of the opening and closing blade, such that an exposure time of the center of the image becomes longer than an exposure time of the end portion of the image, based on the reception of the user input.