| 摘要 |
PURPOSE:To compensate the parallax at the time when a mirror for framing is viewed from the front, by arranging a photographing lens near the side face of a camera and inclining the mirror in the horizontal direction to arrange it in the approximate center of the camera. CONSTITUTION:A framing mirror 7 consisting of a convex mirror is inclined to a plane vertical to an optical axis (l) of a photographing lens 3 and is arranged in the approximate center in vertical and horizontal directions just besides a photographing lens window on a projecting wall 1f, and an extension (m) of the segment connecting the center of curvature of this mirror and the center of the mirror face crosses the optical axis (l) at a point F of a distance where the photographing view angle covers upper half bodies of 1-3 persons. When a lens 15 for short-distance photographing is put on the photographing lens 3, an object field AB in an angle alpha of view is observed in a range CD when viewing the mirror 7 from the point F and an object field A'B' is observed in a range C'D' when viewing it from a point F' because of a resultant focal length. Consequently, if lines 7a and 7b are marked in, for example, positions D and C', lines 7a indicate a photographing limit as a display part for portrait photographing, and lines 7b indicate it as a framing display part for near-distance photographing. |
