| 摘要 |
PURPOSE:To correctly recognize a distance measuring range and a photometric range by providing an optical system having plural reflecting surfaces for changing an inverted real image to an erect non-reverse image and forming an optical path splitting surface so that a part of the reflecting surface may permeate and reflect incident light to split it into two beams. CONSTITUTION:A real image type finder is provided with a porro mirror obtained by taking four mirrors as one set, which changes the inverted real image to the erect image. Then, an AF sensor module 36 and an AE photodetector 37 are positioned optically in a nearly conjugate state with a visual field frame 38. The distance measuring range and the photometric range always coincide with an area mark 39 showing a distance measuring area and a photometric area on the visual field frame 38, accompanied with the zooming operation of an objective lens 30. Besides, there is no possibility that the distance measuring range and the photometric range are deviated from the area mark because of parallax based on a distance to an object. Therefore, the distance measuring range and the photometric range can be always correctly recognized. |
