Abstract: An imaging apparatus includes: a face detection sensor configured to detect a face of a user; a control unit configured to change an operational state of the imaging apparatus to a first operational state and stop an operation of the face detection sensor; and a movement detecting unit configured to detect a movement of the imaging apparatus, wherein the control unit operates the face detection sensor in response to a detection of a movement of the imaging apparatus by the movement detecting unit in the first operational state, and in a case where the face of the user is not detected by the face detection sensor in the first operational state, the control unit changes the operational state of the imaging apparatus from the first operational state to a second operational state in which power consumption is lower than that in the first operational state.

Abstract: An electronic device determines a transfer mode to be used to communicate with a recording medium that has first and second transfer modes. The second transfer mode does not guarantee a minimum transfer speed but a higher transfer speed than the minimum transfer speed in the first mode is capable. If the medium supports the second transfer mode, the device determines that the first transfer mode is to be used when the minimum transfer speed is higher than a necessary transfer speed for data that is to be recorded through the communication with the recording medium and that the second transfer mode is to be used when the minimum transfer speed is not higher than the necessary transfer speed. If the medium does not support the second transfer mode, the device determines that the first transfer mode is to be used.

Abstract: An imaging apparatus includes: a face detection sensor configured to detect a face of a user; a control unit configured to change an operational state of the imaging apparatus to a first operational state and stop an operation of the face detection sensor; and a movement detecting unit configured to detect a movement of the imaging apparatus, wherein the control unit operates the face detection sensor in response to a detection of a movement of the imaging apparatus by the movement detecting unit in the first operational state, and in a case where the face of the user is not detected by the face detection sensor in the first operational state, the control unit changes the operational state of the imaging apparatus from the first operational state to a second operational state in which power consumption is lower than that in the first operational state.

Abstract: An electronic device determines a transfer mode to be used to communicate with a recording medium that has first and second transfer modes. The second transfer mode does not guarantee a minimum transfer speed but a higher transfer speed than the minimum transfer speed in the first mode is capable. If the medium supports the second transfer mode, the device determines that the first transfer mode is to be used when the minimum transfer speed is higher than a necessary transfer speed for data that is to be recorded through the communication with the recording medium and that the second transfer mode is to be used when the minimum transfer speed is not higher than the necessary transfer speed. If the medium does not support the second transfer mode, the device determines that the first transfer mode is to be used.