曝光时使用不同滤色镜即可获得影像反差不同的照片。
By exposing under different light filters, photographs with different image contrast can be obtained.
为了避免在冲洗高反差负像影像过程中产生银的沉积，形成银渣，可采用下列四项措施，效果良好：1采用主显影剂；
For preventing the formation of silver mud sedimented during the processing of hi -contrast negative image, the following four measures are useful and effective:1. using principal developing agents;
洲立的VCD的影像质素向来都很好，不论反差、光度及颜色都差不多是VCD中最好的。
IVL's VCD's quality has been good. All the contrast, brightness, and color are almost the best that you can get from VCDs.
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