Imaging apparatus

An imaging apparatus comprising:

• an image sensor including a plurality of photoelectric conversion units, an output unit configured to output a signal from the plurality of photoelectric conversion units, and a reading unit configured to read the signal from the plurality of photoelectric conversion units via the output unit;
• a display unit configured to display image data from the image sensor;
• and
• a control unit configured to control a first operation in which image data serially read from the image sensor is displayed by the display unit as a serial image and a second operation in which a still image is shot according to an instruction for picking up the still image while the first operation is being performed, and further configured to inhibit supplying power to the output unit during a time period in which a dummy scanning in which the signal from the plurality of photoelectric conversion units is no read is being performed while the first operation is being performed,
• wherein the control unit is configured to control so that a ratio of a time period in which supplying power to the output unit is restrained or inhibited in the first operation during a time period in which a focusing operation is being performed becomes higher than a ratio of a time period in which supplying power to the output unit is restrained or inhibited in the first operation during a time period in which the focusing operation is not being performed.