闪光灯与足迹灯在足迹拍摄中的比较研究

Comparison between Flash Lamp and Footprint Lamp in Footprint Shooting

闪光灯是一种最常见的摄影光源,但是在痕迹物证拍摄实际工作中却很少得到应用。无线引闪器可以把闪光灯与照相机分开单独使用,实现闪光灯的掠入射照明和侧光照明的目的,进一步提高了闪光灯的实用性。实验证实:与足迹灯相比,采用闪光灯照明配光,不仅可以在黑暗环境下,而且能够在明亮环境下对平面灰尘足迹和立体沙土足迹进行显现和拍摄,效果良好。因此,闪光灯在痕迹物证的拍摄中具有一定的推广和应用价值。

Flash lamp,the most common photographic light source,has rare application in the trace evidence shooting. Wireless flash trigger transceiver enables the separate use of flash lamp and the camera,which realizes grazing incidence illumination and oblique lighting of flash lamp to further improve its practicability. Experiments confirmed that compared with footprint lamp,the adoption of flash lamp for lighting and grading,not only in the darkness,but also in the brightness,could reveal and shoot plane dust and tridimensional sand with good result. Therefore,flash lamp has its popularization and application value in trace evidence shooting.