双原生感光度技术下的数字电影视觉效果研究

Research on the Visual Effects of Digital Cinema with Dual Native Sensitivity Technology

随着近年来CMOS影像传感器制造工艺的不断进步,双原生感光度的概念逐渐浮出水面。搭载这项技术的电影摄影机可提供一高一低两档感光度等级,供用户根据拍摄需要选择,以便灵活应对不同的使用环境。双原生感光度技术有很强的噪点控制能力,可以根据用光环境的不同灵活地选择不同的基准感光度,也可以在低照度下拍摄大景深镜头或慢动作镜头的时候切换使用,不仅可以很好地提升画面质量,也可以实现拍摄效率的大幅度提升,用更少的光线、更高的效率创造出更动人的色彩。基于此,详细介绍双原生感光度技术的特点、优势、发展趋势,以及其对拍摄手法带来的变革。

With the continuous progress of CMOS image sensor manufacturing technology in recent years,the concept of dual primary sensitivity has gradually surfaced.The movie camera equipped with this technology can provide two levels of sensitivity,oneh igh and one low,for users to choose according to their shooting needs s,o as to flexibly cope with different use environments.The daul primary sensitivity technology has a strong ability to control noise.t I can flexibly select different reference sensitivity according to the different light environment,and can also be switched when shooting large depth of fiedl or slow motion lens under low illumination.It can not only improve the quality of the picture,but also greatly improve the shooting efficiency,and create more moving colors with lessli ght and higher efficiency.Based on this,this paper introduces in detail the characteristics,advantages,development trend of the dual primary sensitivity technology,as well as the changes it brings to the shooting techniques.