| 摘要 |
<p>A matte box system for a camera includes one or more filter rings 42 each capable of accommodating a filter or filter holder. The filter rings each has a two catch means 52 situated on opposite sides of the filter ring. Each catch means includes a moveable element that engages with an adjacent filter ring such that consecutive filter rings are releasably secured to each other. The frontmost filter ring is provided which does not have the catch means, and which has a wider inner diameter than the filter ring or rings provided with two catch means</p> |
