| 摘要 |
<p>The filter attachment (10) is used for a photographic camera which includes a photocell coupled to a light-metering circuit, the photocell being positioned in an opening adjacent the camera objective. The filter attachment (10) allows the filter to be positioned in front of the objective, this filter having separate filter zones (12, 13) for the objective and the photocell. The filter zones (12, 13) conform in size and shape to that of the objective and the photocell respectively and they may be made from different materials, retained by a common annular disc (14).</p> |
