Abstract: An image pickup apparatus comprises at least one of a sixth lens unit and an eighth lens unit being movable in a direction orthogonal to an optical axis, a first shift driver or a second shift driver driving the sixth or eighth lens unit, a first shift position detector or a second shift position detector detecting a position of the sixth or eighth lens unit, a photographing condition controller controlling imaging conditions, a detector detecting at least one of a moving speed and a moving direction of an object, and a shift controller controlling the sixth or eighth lens unit based on a signal from the detector. The photographing condition control unit has a following shot mode in which an exposure and a driving of the sixth or eighth lens unit are intermittently performed with respect to a movement of the object.

Abstract: An optical apparatus includes a pair of first driving force generators that generates a driving force to the movable member in a first direction orthogonal to optical axes of a pair of objective optical systems, and a second driving force generator that generates a driving force to the movable member in a second direction orthogonal to the optical axes of the pair of objective optical systems and the first direction. The pair of first driving force generators are provided between a first line segment passing through the optical axes of the pair of objective optical systems and a second line segment passing through the optical axes of the pair of eyepiece optical systems or on at least one line segment of the first line segment and the second line segment. The second driving force generator is provided between the pair of image stabilization optical systems.

Abstract: An optical apparatus includes an eye width adjustment mechanism that includes a first connecting member configured to connect a connecting portion of the right eyepiece unit on one side of a reference plane and a connecting portion of the left eyepiece unit on the other side of the reference plane to each other where the reference plane is a plane including the rotation center axes of the right and left eyepiece units, and a second connecting member configured to connect the connecting portion of the right eyepiece unit on the other side of the reference plane and the connecting portion of the left eyepiece unit on the one side of the reference plane.

Abstract: An optical apparatus includes a pair of first driving force generators that generates a driving force to the movable member in a first direction orthogonal to optical axes of a pair of objective optical systems, and a second driving force generator that generates a driving force to the movable member in a second direction orthogonal to the optical axes of the pair of objective optical systems and the first direction. The pair of first driving force generators are provided between a first line segment passing through the optical axes of the pair of objective optical systems and a second line segment passing through the optical axes of the pair of eyepiece optical systems or on at least one line segment of the first line segment and the second line segment. The second driving force generator is provided between the pair of image stabilization optical systems.

Abstract: An optical apparatus includes an eye width adjustment mechanism that includes a first connecting member configured to connect a connecting portion of the right eyepiece unit on one side of a reference plane and a connecting portion of the left eyepiece unit on the other side of the reference plane to each other where the reference plane is a plane including the rotation center axes of the right and left eyepiece units, and a second connecting member configured to connect the connecting portion of the right eyepiece unit on the other side of the reference plane and the connecting portion of the left eyepiece unit on the one side of the reference plane.