| 摘要 |
PURPOSE:To execute the precise control of exposure at low cost with a simple constitution by providing a distance measuring means for measuring the distance to an object, a comparison means for comparing the distance with a previously specified distance (d) and an exposure control means for executing the control of exposure based on the compared result of the comparison means. CONSTITUTION:When it is decided that the distance D to the object (h) which is obtained by measuring by the distance measuring means (a) is shorter than the limit distance (d) specified according to the precision of measuring distance of distance measuring means (a), the control C of exposure that an iris and the speed of a shutter are changed based on the distance D to the object is executed. Meanwhile, when it is decided that the distance D to the object is longer than the limit distance (d), on the contrary, the control (f) of exposure by dimming based on the light quantity of a reflected light from the object is executed. Namely, in a short distance photographing in which the precision of measuring distance is very high, the precise control of the exposure quantity based on the measured distance to the object (h) without receiving the effect of the reflectance of the object is executed and in a long distance photographing where the error of measuring distance becomes large, the control of the exposure quantity based on the received light quantity of the reflected light from the object (h) is executed. Thus excessive overexposure can be prevented in the long distance and the precision of exposure can be raised. |
