| 摘要 |
<p>This invention relates to light measuring devices, and, more particularly, to light measure devices for a circuit receiving reflected light from an object being photographed with flash illumination. The invention is to obtain an alternating current component (the flash illumination) alone or a mixture of the alternating current component and a fraction of a direct current component (ambient light) as the output of the light measuring circuit only by arranging a feedback circuit having a prescribed gain for low frequencies in the feedback network of the light measuring circuit, the fraction being adjustable by varying the prescribed gain.</p> |
