An optical apparatus, comprising: a lens holding frame which holds a photographing lens; a base member; a lens holder which holds an image blur correction lens, the lens holder being movable with respect to the base member within a plane orthogonal to an optical axis of an optical system of the photographing lens held by the lens holding frame; three balls arranged between the base member and the lens holder, and only two bias members arranged to reduce the roll of the lens holder by biasing the lens holder toward the base member so as to hold the three balls between the base member and the lens holder, the two bias members being: a first spring which is arranged so that one end of the first spring is engaged with the lens holder and the other end of the first spring is engaged with the base member; and a second spring which is arranged so that one end of the second spring is engaged with the lens holder and the other end of the second spring is engaged with the base member; and further including: a first drive unit which moves the lens holder toward a first direction with respect to the base member; and a second drive unit which moves the lens holder toward a second direction orthogonal to the first direction with respect to the base member; characterized in that a first hook portion is formed by a first circular edge portion on one end of the first spring and is engaged with a first hook engaging portion of the lens holder, and a second hook portion is formed by a second circular edge portion on one end of the second spring and is engaged with a second hook engaging portion of the lens holder, in a case where an optical axis of the image blur correction lens is in a position matching the optical axis of the photographing lens, a center of gravity of the lens holder is positioned in a triangle formed by the three balls within a plane orthogonal to an optical axis of the photographing lens, the first and second hook engaging portions are arranged in a manner that a line segment interconnecting the first and second hook engaging portions within the plane intersects two sides of the triangle when seen from a direction of the optical axis of the photographing lens, the first hook portion is engaged with the first hook engaging portion so that a first plane including the first circular edge portion of the first hook portion is set in parallel with the second direction, and the second hook portion is engaged with the second hook engaging portion so that a second plane including the second circular edge portion of the second hook portion is set in parallel with the first direction. a lens holding frame which holds a photographing lens; a base member; a lens holder which holds an image blur correction lens, the lens holder being movable with respect to the base member within a plane orthogonal to an optical axis of an optical system of the photographing lens held by the lens holding frame; three balls arranged between the base member and the lens holder, and only two bias members arranged to reduce the roll of the lens holder by biasing the lens holder toward the base member so as to hold the three balls between the base member and the lens holder, the two bias members being: a first spring which is arranged so that one end of the first spring is engaged with the lens holder and the other end of the first spring is engaged with the base member; and a second spring which is arranged so that one end of the second spring is engaged with the lens holder and the other end of the second spring is engaged with the base member; a first spring which is arranged so that one end of the first spring is engaged with the lens holder and the other end of the first spring is engaged with the base member; and a second spring which is arranged so that one end of the second spring is engaged with the lens holder and the other end of the second spring is engaged with the base member; a first drive unit which moves the lens holder toward a first direction with respect to the base member; and a second drive unit which moves the lens holder toward a second direction orthogonal to the first direction with respect to the base member;