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| 利用胶片反射光的直接测光系统及其分析计算 |
| Light Direct Measuring System Using Film Reflected Energy and Its Analysis |
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| DOI: |
| 中文关键词: 直接测光,胶片反射光,分析计算 |
| 英文关键词:Light Direct Meassurement, Film Reflected Energy, Analysis |
| 基金项目: |
| 冯华君 |
| 浙江大学光学仪器国家重点实验室!杭州,310027 |
| 摘要点击次数: 2102 |
| 全文下载次数: 10 |
| 中文摘要: |
| 普及型照相机测光系统中,测光在时间或空间上与实际曝光不一致,从而影响曝光量控制精度。利用胶片平面反射光的直接测光系统是一种与实际曝光量非常接近的测光系统,无时间差、无空间差,测光精度很高。本文较详细地分析了一种特殊用途照相机使用的高精度直接测光系统,对系统光能量计算作了详细分析,并给出了结论。 |
| 英文摘要: |
| Generally, there is diffrence between light measuring system of camera and real exposure in space or in time. This diffrence effects exposure precision of camera. Light, direct measuring system using film reflected energy is one of the accurate light measuring systems that have no space error and no time error, s reasame as real exposure. In this paper, a high precision light direct measuring system used in a special camera has been analysised detailly.The method and formula for calculating the system energy has been arrived. In the last, a re-sult has been given. |
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