摘要:
The interchangeable lens unit (2) includes the fourth lens group unit (78), the sixth lens group unit (77), the focus lens unit (75), the zoom ring unit (83), the focus motor (64) and the lens microcomputer (40). The focus motor (64) is fixed to the sixth lens group unit (77) and is configured to electrically drive the focus lens unit (75) in the optical axis direction with respect to the sixth lens group unit (77). The lens microcomputer (40) is configured to control the focus motor (64) so that the focus lens unit (75) is driven in one direction with respect to the sixth lens group unit (77) when the sixth lens group unit (77) is driven in one direction with respect to the imaging sensor (11) by the zoom ring unit (83).
摘要:
The interchangeable lens unit (2) includes the fourth lens group unit (78), the sixth lens group unit (77), the focus lens unit (75), the zoom ring unit (83), the focus motor (64) and the lens microcomputer (40). The focus motor (64) is fixed to the sixth lens group unit (77) and is configured to electrically drive the focus lens unit (75) in the optical axis direction with respect to the sixth lens group unit (77). The lens microcomputer (40) is configured to control the focus motor (64) so that the focus lens unit (75) is driven in one direction with respect to the sixth lens group unit (77) when the sixth lens group unit (77) is driven in one direction with respect to the imaging sensor (11) by the zoom ring unit (83).
摘要:
The lens barrel is a lens barrel for forming an optical image of a subject on an imaging element, comprising a first lens unit, a second lens unit, a focus lens unit, a zoom mechanism, and a focus actuator. The focus lens unit is movably supported by the second lens unit in the optical axis direction. The operating force inputted to the zoom control is mechanically transmitted to at least one of the first lens unit and the second lens unit. The focus actuator is fixed to the second lens unit and electrically drives the focus lens unit relative to the second lens unit in the optical axis direction. The second lens unit or the focus lens unit is disposed nearest to the image plane in the optical system including the first lens element, the second lens element, and the focus lens.
摘要:
The lens barrel is a lens barrel for forming an optical image of a subject on an imaging element, comprising a first lens unit, a second lens unit, a focus lens unit, a zoom mechanism, and a focus actuator. The focus lens unit is movably supported by the second lens unit in the optical axis direction. The operating force inputted to the zoom control is mechanically transmitted to at least one of the first lens unit and the second lens unit. The focus actuator is fixed to the second lens unit and electrically drives the focus lens unit relative to the second lens unit in the optical axis direction. The second lens unit or the focus lens unit is disposed nearest to the image plane in the optical system including the first lens element, the second lens element, and the focus lens.
摘要:
A camera body 3 includes a cross control key 27 and a body microcomputer 10. The body microcomputer 10 can acquire lens information related to an interchangeable lens unit 2 from the interchangeable lens unit 2. The body microcomputer 10 decides whether or not the interchangeable lens unit 2 is compatible with electric zoom on the basis of lens information. The body microcomputer 10 also activates zoom operation at the cross control key 27 on the basis of this decision result.
摘要:
An interchangeable lens unit includes a second lens group unit, a focus lens unit, a fourth lens group unit, a zoom ring unit, a focus motor, and a photosensor. The zoom ring unit is arranged to mechanically transmit operational force inputted to a zoom ring to the second lens group unit and the fourth lens group unit. The focus motor is configured to electrically drive the focus lens unit in the Z axis direction with respect to the second lens group unit. The photosensor is configured to detect whether or not the focus lens unit is disposed at a starting point position with respect to the second lens group unit. The starting point position is disposed within the total movement range E of the focus lens unit.
摘要:
A camera system includes an interchangeable lens and a camera body to which the interchangeable lens can be mounted, either directly or via an adapter. A lens microcomputer of the interchangeable lens is configured to hold lens information including information related to a focal point detection method. A body microcomputer of the camera body is configured to select a focal point detection method on the basis of lens information. The body microcomputer is configured to select a contrast detection method as the focal point detection method if the interchangeable lens is compatible with a contrast detection method. The body microcomputer is configured to select a phase difference detection method as the focal point detection method if the interchangeable lens is not compatible with a contrast detection method, and the adapter is compatible with a phase difference detection method.
摘要:
A camera system includes an interchangeable lens and a camera body. The camera body includes an imaging unit, a contrast detection unit, a defocusing amount detection unit, and a body microcomputer. The contrast detection unit is configured to detect a contrast value from an image signal of a subject acquired by the imaging unit, and is configured to detect the focal state of an optical image on the basis of the contrast value. The defocusing amount detection unit is configured to detect the focal state of the optical image by phase difference detection method. The body microcomputer is configured to select either the contrast detection unit or the defocusing amount detection unit on the basis of lens information on the interchangeable lens side.
摘要:
A camera system includes an interchangeable lens and a camera body. The interchangeable lens has a focal adjuster including a focus lens group, an absolute position detector configured to detect the position of the focus lens group with respect to a movable range, and a relative position detector configured to detect the movement amount of the focus lens group. The camera body has a first focal detector configured to detect the focal state on the basis of a contrast value and a second focal detector configured to detect the focal state by phase difference detection method on the basis of the optical image. When the first focal detector is used for focal adjustment, a detection of the focal state is performed on the basis of only the information obtained by the relative position detector.
摘要:
A camera system includes an interchangeable lens and a camera body to which the interchangeable lens can be mounted, either directly or via an adapter. A lens microcomputer of the interchangeable lens is configured to hold lens information including information related to a focal point detection method. A body microcomputer of the camera body is configured to select a focal point detection method on the basis of lens information. The body microcomputer is configured to select a contrast detection method as the focal point detection method if the interchangeable lens is compatible with a contrast detection method. The body microcomputer is configured to select a phase difference detection method as the focal point detection method if the interchangeable lens is not compatible with a contrast detection method, and the adapter is compatible with a phase difference detection method.