Olympus Optical Company, Ltd.

Hideto Kitazawa

Tatsuya Suzuki

Koji Kato

Shigeo Hayashi

Yuji Imai

Azuma Miyazawa

Yoshinori Matsuzawa

Juro Kikuchi

Hisayuki Matsumoto

Takashi Inoue

A zoom lens barrel is a lens barrel having a plurality of lens groups that change intervals in the direction of an optical axis at the time of a zooming operation and move in one-piece toward the optical axis at the time of a focusing operation thereby fixing the mutual intervals in the direction of the optical axis. Furthermore, the zoom lens barrel drives a second group lens frame toward the optical axis via a cam follower by a three-dimensional cam that rotates around the optical axis at the time of the zooming operation and moves toward the optical axis at the time of the focusing operation to perform zooming or focusing. According to this zoom lens barrel, it becomes possible to make the radial size small and further to easily maintain good optical performance.

Zoom lens barrel

A photographing apparatus is equipped with a photographing optical system, a film holding member on which the photographing optical system is fixed, a supporting frame which rotatably supports the film holding member around a shaft, an outer supporting frame which rotatably supports the supporting frame around the shaft, a finder optical system which has an optical axis different from that of the photographing optical system and which is mounted on the top surface of the outer supporting frame, an AF distance measuring section for measuring the distance to an object, and a captive cam for driving the film holding member and a captive cam for driving the supporting frames for correcting parallax in accordance with the output of the AF distance measuring section. The captive cams are driven also for correcting the blur of an exposure image.

Photographing apparatus

A camera which reduces camera shake by adjusting the shutter timing is characterized in that it has a mode for displaying a camera shake amount to allow a photographer to recognize a camera shake. A shutter timing determining section permits shutter release at a timing at which the camera shake amount becomes a predetermined amount or less during a shutter release operation on the basis of the camera shake amount detected by a camera shake detecting section. When a camera shake learning mode is set through an input section, a camera shake amount is converted into a display amount by a display data converting section through a camera shake mode selecting section. This display amount is displayed on a display section in real time while a shutter release button is depressed. The camera shake selecting section inhibits a shutter driving operation of the shutter timing determining section in the camera shake amount display mode, thus also allowing a photographer to learn how to depress the shutter release button without causing a camera shake.

Camera shake amount display apparatus for camera

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Hachioji, Japan

Hideto Kitazawa