An image pickup apparatus comprising: a wireless antenna; an image pickup device configured to convert an optical image of a subject into an electric signal; a movable unit configured to hold the image pickup device and to be capable of being displaced in a direction different from a direction of an optical axis of an image pickup optical system; a control unit including a circuit to which an image pickup signal output from the image pickup device is transmitted; a first flexible board (270a, 770a, 970a) configured to electrically connect the movable unit and the control unit with each other; and a second flexible board (270b, 770b, 970b) configured to electrically connect the movable unit and the control unit with each other, wherein the first flexible board (270a, 770a, 970a) comprises a first connecting portion that is connected to the movable unit, a first wiring portion that is extended from the first connecting portion in a first direction different from the direction of the optical axis, and a second connecting portion that is placed at an end of the first wiring portion and connected to the control unit, and wherein the second flexible board (270b, 770b, 970b) comprises a third connecting portion that is connected to the movable unit, a second wiring portion that is extended from the third connecting portion in a second direction different from the direction of the optical axis and opposite to the first direction, and a fourth connecting portion that is placed at an end of the second wiring portion and connected to the control unit, characterized in that the second connecting portion is placed farther away from an installation location of the wireless antenna than the fourth connecting portion, and among the first and second flexible boards, only the first flexible board (270a, 770a, 970a) comprises differential transmission wiring, and the second flexible board (270b, 770b, 970b) comprises power wiring. a wireless antenna; an image pickup device configured to convert an optical image of a subject into an electric signal; a movable unit configured to hold the image pickup device and to be capable of being displaced in a direction different from a direction of an optical axis of an image pickup optical system; a control unit including a circuit to which an image pickup signal output from the image pickup device is transmitted; a first flexible board (270a, 770a, 970a) configured to electrically connect the movable unit and the control unit with each other; and a second flexible board (270b, 770b, 970b) configured to electrically connect the movable unit and the control unit with each other, wherein the first flexible board (270a, 770a, 970a) comprises a first connecting portion that is connected to the movable unit, a first wiring portion that is extended from the first connecting portion in a first direction different from the direction of the optical axis, and a second connecting portion that is placed at an end of the first wiring portion and connected to the control unit, and wherein the second flexible board (270b, 770b, 970b) comprises a third connecting portion that is connected to the movable unit, a second wiring portion that is extended from the third connecting portion in a second direction different from the direction of the optical axis and opposite to the first direction, and a fourth connecting portion that is placed at an end of the second wiring portion and connected to the control unit, characterized in that the second connecting portion is placed farther away from an installation location of the wireless antenna than the fourth connecting portion, and among the first and second flexible boards, only the first flexible board (270a, 770a, 970a) comprises differential transmission wiring, and the second flexible board (270b, 770b, 970b) comprises power wiring.