| 摘要 |
PROBLEM TO BE SOLVED: To obtain a satisfactory photograph in proper exposure at the appropriate density ratio of a main subject to background not only in photographing in a room and at night but also in photographing using a stroboscope outdoors and in the daytime by providing an adjusting mechanism, etc., changing exposure in accordance with a light quantity signal and a means for adjusting strobe light quantity to a subject in accordance with a subject signal. SOLUTION: When the light quantity of the subject is small, the deflection quantity of a needle 57a is small and the needle 57a is at an opposed position to the high surface of a cam surface 51b. When a shutter button 21 is half- depressed in such a state, a projection 21b presses up an interlocking lever 63. Thus, a cam plate 51 is turned counterclockwise. When the cam plate 51 is turned, an actuation pin 58 is moved upward and diaphragm plates 54 and 55 are mutually turned, so that a diaphragm aperture is formed to have a large diameter. Furthermore, when the button 21 is fully depressed, a shutter blade is opened and closed and a synchro switch is turned on to adjust the strobe light quantity to the subject and the strobe light is emitted.
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