Imaging apparatus and control method therefor
An imaging apparatus can include an angle calculation unit configured to calculate attitude angles of a main body unit and a display unit from gravitational accelerations acquired from a first acceleration sensor and a second acceleration sensor, and switches a calculation method of the attitude angles to be calculated by the angle calculation unit based on a vibration state detected by a vibration detection unit.
1 . An imaging apparatus, comprising:
a main body;
a display;
a display holder configured to rotatably hold the display relative to the main body;
a first acceleration sensor configured to detect a first gravitational acceleration applied to the main body;
a second acceleration sensor configured to detect a second gravitational acceleration applied to the display;
an angle calculator configured to include a low-pass filter, and to calculate an attitude angle of the main body based on the first gravitational acceleration and an attitude angle of the display based on the second gravitational acceleration; and
a display switch configured to switch a display state of the display based on the attitude angle of the main body and the attitude angle of the display,
wherein a cutoff frequency of the low-pass filter in a large vibration state is set to be lower than a cutoff frequency of the low-pass filter in a small vibration state.
2 . The imaging apparatus according to claim 1 , wherein the first acceleration sensor and the second acceleration sensor detect the gravitational accelerations using similar acceleration sensors.
3 . The imaging apparatus according to claim 1 ,
wherein the angle calculator includes a temperature information acquisition unit configured to acquire temperature information inside the imaging apparatus, and an elapsed time acquisition unit configured to acquire an elapsed time from an activation time of the imaging apparatus,
wherein the temperature information acquisition unit is arranged at a position nearer to the first acceleration sensor than to the second acceleration sensor,
wherein, using the temperature information inside the imaging apparatus acquired by the temperature information acquisition unit, the cutoff frequency of the low-pass filter to be applied to the first acceleration sensor when the temperature information is large is set to be lower than the cutoff frequency of the low-pass filter when the temperature information is small, or, using the elapsed time acquired by the elapsed time acquisition unit, the cutoff frequency of the low-pass filter to be applied to the first acceleration sensor when the elapsed time acquired by the elapsed time acquisition unit is long is set to be lower than the cutoff frequency of the low-pass filter when the elapsed time is short, and
wherein the cutoff frequency of the low-pass filter to be applied to the second acceleration sensor when the elapsed time from the activation time acquired by the elapsed time acquisition unit is long is set to be lower than the cutoff frequency of the low-pass filter when the elapsed time is short.
4 . The imaging apparatus according to claim 1 ,
wherein the display switch includes a display storage unit configured to temporally store the display state determined by the display switcher, and a response speed setting unit configured to set a display switching response speed, and
wherein the display switcher displays the continued display state in a case where a same display state continues for a predetermined time within a time period set by the response speed setting unit.
5 . The imaging apparatus according to claim 1 ,
wherein the display switcher includes a moving image recording determination unit configured to determine whether a moving image recording is being performed,
wherein the display switcher has a function of switching between a first display state and a second display state, and
wherein, in a case where the moving image recording determination unit determines that the moving image recording is being performed, the display switcher expands a boundary angle of switching between the first display state and the second display state.
6 . The imaging apparatus according to claim 5 , wherein the display switcher expands the boundary angle of switching between the first display state and the second display state in a case where a vibration is larger than a predetermined threshold value.
7 . The imaging apparatus according to claim 1 , further comprising a vibration detector configured to detect a vibration applied to the main body or the display.
8 . A control method for an imaging apparatus including
a main body,
a display,
a display holder configured to rotatably hold the display unit relative to the main body unit,
a first acceleration sensor configured to detect a first gravitational acceleration applied to the main body,
a second acceleration sensor configured to detect a second gravitational acceleration applied to the display,
an angle calculator configured to include a low-pass filter, and to calculate an attitude angle of the main body based on the first gravitational acceleration and an attitude angle of the display based on the second gravitational acceleration,
a display switcher configured to switch a display state of the display based on the attitude angle of the display, and
wherein a cutoff frequency of the low-pass filter in a large vibration state is set to be lower than a cutoff frequency of the low-pass filter in a small vibration state.