缩微胶片在刑侦痕迹检验照相中的应用

Use of Microfilm in the Photography of Traces for Crime Detection

本文主要介绍利用缩微胶片拍照弱反差痕迹及一些在全色片上反差微弱的痕迹,为邢侦痕迹检验鉴定提供方便条件。

This paper reports a study on the use of microfilm for taking photographs of trace objects having a subtle gradation which can only yield a very low contrast image on normal panchromatic film,thus offering very useful information for crime detection.