Interchangeable lens and camera body to which interchangeable lens is mountable
View Patent ↗There is provided an interchangeable lens mountable to a camera body. The interchangeable lens includes a zoom lens which can change a field angle of a subject image, a receiving unit for receiving sound pickup property information from the camera body, the sound pickup property information indicating sound pickup property of the camera body, and a lens controller for controlling drive of the zoom lens. The lens controller decides an available driving speed based on the sound collecting property information, the available driving speed being a driving speed settable to the zoom lens.
1. An interchangeable lens mountable to a camera body, comprising:
a zoom lens operable to change a field angle of a subject image;
a receiving unit operable to receive sound pickup property information from the camera body, the sound pickup property information is a specific property of the camera body that indicates degree of ability to pick up, by a sound pickup unit provided in the camera body, noise to be produced by the interchangeable lens, the sound pickup unit being operable to pick up ambient sound; and
a lens controller operable to control drive of the zoom lens, wherein
the lens controller decides an available driving speed based on the sound pickup property information, the available driving speed being a driving speed settable to the zoom lens, and the sound pickup information is a property used for deciding the available driving speed of the lens.
2. The interchangeable lens according to claim 1 , further comprising a storage unit operable to store noise information, the noise information associating a driving speed of the zoom lens with loudness of noise produced when the zoom lens is driven at the driving speed, wherein
the lens controller decides the available driving speed based on the sound pickup property information and the noise information stored in the storage unit.
3. The interchangeable lens according to claim 1 , wherein the interchangeable lens and/or the camera body further comprises an operation unit operable to receive an operation to the zoom lens,
the lens controller decides a maximum value of the available driving speed as a maximum driving speed, and
the lens controller sets the driving speed of the zoom lens to the decided maximum driving speed when the operation unit receives the operation.
4. The interchangeable lens according to claim 1 , wherein the interchangeable lens and/or the camera body further comprises an operation unit operable to receive an operation to the zoom lens,
the lens controller decides a maximum value of the available driving speed as a maximum driving speed,
the lens controller decides a target driving speed which is a driving speed of the zoom lens based on the operation received by the operation unit, and
the lens controller
sets the driving speed of the zoom lens to the maximum driving speed when the target driving speed is the maximum driving speed or higher, and
sets the driving speed of the zoom lens to the target driving speed when the target driving speed is lower than the maximum driving speed.
5. The interchangeable lens according to claim 1 , wherein the sound pickup property information indicates either one of a shape of the camera body, a position of a sound pickup unit in the camera body operable to pick up ambient sound, and/or a distance between the interchangeable lens mounted to the camera body and the sound pickup unit in the camera body.
6. A camera body to which an interchangeable lens is mountable, comprising:
a sound pickup unit operable to pick up ambient sound;
a storage unit operable to store sound pickup property information which a specific property of the sound pickup unit that indicates degree of ability to pick up, the sound pick up unit provided in the camera body, noise to be produced by the interchangeable lens, the sound pickup property information being a property used for deciding an available driving speed of a zoom lens in the interchangeable lens; and
a sending unit operable to send the sound pickup property information to the interchangeable lens.
7. The camera body according to claim 6 , wherein the sound pickup property information indicates degree of ability to pick up the noise produced by the interchangeable lens by the camera body.
8. The camera body according to claim 6 , wherein the sound pickup property information indicates either one of a shape of the camera body, a position of the sound pick up unit in the camera body, and/or distance between the interchangeable lens mounted to the camera body and the sound pickup unit in the camera body.
9. A camera system comprising a camera body and an interchangeable lens mountable to the camera body, wherein
the camera body comprises:
a sound pickup unit operable to pick up ambient sound;
a storage unit operable to store sound pickup property information which is a specific property of th sound pickup unit that indicates degree of ability to pick up, the sound pickup unit provided in the camera body, noise to be produced by the interchangeable lens; and
a sending unit operable to send the sound pickup property information to the interchangeable lens, and
the interchangeable lens comprises:
a zoom lens operable to change a field angle of a subject image;
a receiving unit operable to receive the sound pickup property information from the camera body, and
a lens controller operable to control drive of the zoom lens, wherein
the lens controller decides an available driving speed based on the sound pickup property information, the available driving speed being a driving speed settable to the zoom lens, and the sound pickup property information is a property used for deciding the available driving speed of zoom lens.
10. The camera system according to claim 9 , wherein the interchangeable lens further comprises:
a lens storage unit operable to store noise information, the noise information associating a driving speed of the zoom lens with loudness of noise produced when the zoom lens is driven at the driving speed, and
the lens controller decides the available driving speed based on the sound pickup property information and the noise information stored in the lens storage unit.
11. The camera system according to claim 9 , wherein the sound pickup property information indicates degree of ability to pick up the noise produced by the zoom lens by the camera body.
12. The camera system according to claim 9 , wherein the interchangeable lens and/or the camera body further comprises an operation unit operable to receive an operation to the zoom lens,
the lens controller decides a maximum value of the available driving speed as a maximum driving speed, and
the lens controller sets the driving speed of the zoom lens to the decided maximum driving speed when the operation unit receives the operation.
13. The camera system according to claim 9 , wherein the interchangeable lens and/or the camera body further comprises an operation unit operable to receive an operation to the zoom lens,
the lens controller decides a maximum value of the available driving speed as a maximum driving speed,
the lens controller decides a target driving speed which is a driving speed of the zoom lens based on the operation received by the operation unit, and
the lens controller
sets the driving speed of the zoom lens to the maximum driving speed when the target driving speed is the maximum driving speed or higher, and
sets the driving speed of the zoom lens to the target driving speed when the target driving speed is lower than the maximum driving speed.
14. The camera system according to claim 9 , wherein the sound pickup property information indicates either one of a shape of the camera body, a position of the sound pick up unit in the camera body, and/or a distance between interchangeable lens mounted to the camera body and the sound pickup unit in the camera body.