A prism apparatus (192b, 592, 692) for a camera apparatus, the prism apparatus comprising: a first prism (PSMa) configured to reflect input light toward a first reflected direction; a first actuator (ACTa) configured to change an angle of the first prism (PSMa) about a first rotation axis (Axma) to change the first reflected direction based on a first control signal; a second prism (PSMb) configured to reflect the light reflected from the first prism (PSMa) toward a second reflected direction; and a second actuator (ACTb) configured to change an angle of the second prism (PSMb) about a second rotation axis (Axmb) to change the second reflected direction based on a second control signal, wherein the first rotation axis (Axma) of the first prism (PSMa) is perpendicular to the second rotation axis (Axmb) of the second prism (PSMb), wherein: in response to a movement causing rotation of the first prism (PSMa) in a first rotation direction about the first rotation axis (Axma) by a first angle and rotation of the second prism (PSMb) in a second rotation direction about the second rotation axis (Axmb) by a second angle, the first actuator (ACTa) is configured to rotate the first prism (PSMa) in a third rotation direction opposite the first rotation direction by a third angle in response to the first control signal (Saca), the second actuator (ACTb) is configured to rotate the second prism (PSMb) in a fourth rotation direction opposite the second rotation direction by a fourth angle in response to the second control signal (Sacb), characterized in that the third angle is half of the first angle, and the fourth angle is half of the second angle. a first prism (PSMa) configured to reflect input light toward a first reflected direction; a first actuator (ACTa) configured to change an angle of the first prism (PSMa) about a first rotation axis (Axma) to change the first reflected direction based on a first control signal; a second prism (PSMb) configured to reflect the light reflected from the first prism (PSMa) toward a second reflected direction; and a second actuator (ACTb) configured to change an angle of the second prism (PSMb) about a second rotation axis (Axmb) to change the second reflected direction based on a second control signal, wherein the first rotation axis (Axma) of the first prism (PSMa) is perpendicular to the second rotation axis (Axmb) of the second prism (PSMb), wherein: in response to a movement causing rotation of the first prism (PSMa) in a first rotation direction about the first rotation axis (Axma) by a first angle and rotation of the second prism (PSMb) in a second rotation direction about the second rotation axis (Axmb) by a second angle, the first actuator (ACTa) is configured to rotate the first prism (PSMa) in a third rotation direction opposite the first rotation direction by a third angle in response to the first control signal (Saca), the second actuator (ACTb) is configured to rotate the second prism (PSMb) in a fourth rotation direction opposite the second rotation direction by a fourth angle in response to the second control signal (Sacb), characterized in that the third angle is half of the first angle, and the fourth angle is half of the second angle. in response to a movement causing rotation of the first prism (PSMa) in a first rotation direction about the first rotation axis (Axma) by a first angle and rotation of the second prism (PSMb) in a second rotation direction about the second rotation axis (Axmb) by a second angle, the first actuator (ACTa) is configured to rotate the first prism (PSMa) in a third rotation direction opposite the first rotation direction by a third angle in response to the first control signal (Saca), the second actuator (ACTb) is configured to rotate the second prism (PSMb) in a fourth rotation direction opposite the second rotation direction by a fourth angle in response to the second control signal (Sacb), characterized in that the third angle is half of the first angle, and the fourth angle is half of the second angle. the third angle is half of the first angle, and the fourth angle is half of the second angle.