| 摘要 |
PURPOSE:To measure the distance of a large subject distance zone with a small- scale range finder, so as to reduce the cost and size of the range finder, by constituting the range finder in such a way that the automatically adjustable distance measuring zone of the range finder can be changed in accordance with the photographing mode. CONSTITUTION:To switch the photographing mode from the normal mode to close-up mode, the frame body 41 of a flash device is pushed leftward. When pushed, the frame body 41 rotates clockwise and the lighting direction becomes suitable for the close-up photographing. As the frame body 41 rotates, a finder block 44 also rotates towards the optical axis of a photographing lens. Under the normal photographing mode, a distance measuring zone is divided into a long distance zone Z1, intermediate distance zone Z2, and short distance zone Z3, basing on a distances L1, L2, and L3 as references. When the finder block 44 rotates, namely, a photoreceptor element 47 rotates and the photographing mode is switched to the close-up mode, the distance measuring zone becomes Z1, Z2, and Z3 basing on distances l1, l2, and l3 as references. Therefore, a large subject distance zone can be measured in terms of distance with a small-scale range finder. |
