| 摘要 |
A camera having a photosensitive element connected in an electric circuit for calculating the quantity of light exposure, a ring rotated with the desired exposure setting condition, a tear drop type light adjusting element adjustably connected to the ring in accordance with the photosensitivity of the photographic film used for varying the quantity of light received by the photosensitive element, a circuit constant setter in the calculation circuit, and successive contacts which are engaged in accordance with the relative position between the fixed portion of the camera and the tear drop type light adjusting element to control the circuit constant setter. The light adjusting element is provided with a tear drop shaped opening so shaped that when using a film having a photosensitivity less than a predetermined value, the circuits constants are not varied but only the quantity of the light impinging upon the photosensitive element is varied, whereas when using a film having a photosensitivity higher than the predetermined value, variation of the light quantity upon the photosensitive element and of the circuit constants are effected sequentially.
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