| 摘要 |
<p>PURPOSE: To improve the movility of a photographing device at a hand-holding photographing time. CONSTITUTION: The frame 30 of the device is provided with a lock ring 61 having circular-arc-like pieces 61a, 61b and 61c closely brought into contact with a groove for fitting an optical member provided at the front lens barrel part of a photographing lens and the outer circumferential side of the ring 61 is provided with a lock cam 62 having notches 62a, 62b and 62c corresponding to the pieces 61a, 61b and 61c and getting gradually deeper in a direction shown by an arrow (c). In the case that an image plane shake prevention device is required, the ring 61 is fixed to the position of the groove of the front lens barrel part and the frame 30 is fixed because the pieces 61a, 61b and 61c are pushed out in the radius direction shown by an arrow (b) and closely brought into contact with the groove when the cam 62 is turned in the direction shown by the arrow (c) after the ring 61 is aligned with the position of the groove of the front lens barrel part.</p> |
