侧位直接闪光法在近距摄影中的分析与应用  

Analysis and Application of the Method of Off -camera Direct Flash in Close Photograph

作　　者：陈源锋[1] 

机构地区：[1]福建公安高等专科学校,福州350007

出　　处：《影像技术》2001年第3期19-21,共3页Image Technology

摘　　要：在近距摄影中,用闪光灯作为光源,难以控制的是曝光量,本文根据有关计算方法,从理论上推导出侧位直接闪光法在近距摄影中的光圈系数计算公式,对影响曝光结果的因素进行定性分析,同时通过试验加以证实并说明应用方法。In close photograph,it is hard to con trol exposure value when you use flash as the source of light.Based on some relevant calculating formulas,this paper deduces the calculating formula of aperture value while usin g off -camera direct flash in close photograph.The author also carries on qualitative analysis of the factors that a ffect the exposure effect.additionally,these analysis are verified,illustrated by experiments.The application method is also explained by his analysis.

关 键 词：近距摄影 闪光指数 光圈系数 曝光量 侧位直接闪光法 摄影光学 

分 类 号：TB811.1[一般工业技术—摄影技术] TB879