數位電影製作RAW檔案之運用研究－以短片《杏歡》為例

電影與其他藝術表現的特質相異。其影像表現須透過時閩、空間、運動、色彩、光影等影像美學外，並藉此同時強調其為一空間性的再現藝術，也說明了這樣形式的紀錄強大地影響了電影的表現力。在數位技術推陳出新的當下，影片素材的立即可用性逐漸成為電影製作方式的選擇要項。數位製作也有逐漸忽略前述表現本質的傾向。因此認識各種數位影像的記錄與其得以發揮的特性，與慎選電影影像表現手段實為當務之急。本研究藉由被視電影底片的記錄特性，及數位影像的RGB三色紀錄原理之差異，分析並建構出數位沖印和數位毛片與數位檔案管理，為數位電影製作的基礎概念。再經由數位電影作品《杏歡》在製作上的運用進行實證研究之同時，將引用自底片概念的RG B全彩和YUV色彩取樣編碼之差異，把原生RAW檔在影像表現上，分別以在主間中的色彩、光影的描繪能力進行會實證研究，進而歸納出熟知製作與工作流程、負片概念的原生RAW檔製作可提升影像藝術表現性、與調整現場監看概念、及依據製作需求慎選數位檔案製作格式為結論，呼籲數位潮流中電影製作的適切態度。

關鍵字

電影影像表現；數位沖印；數位電影製作；原生RAW檔；《杏歡》

並列摘要

Different in character from other forms of artistic express ion, the film image expresses itself through the elements in the visual arts such as time, space, motion, color, and lighting, and also emphasizes spatial representation. This kind of recording media malerial deeply influences the representational ability of the film image. As a result of trends in digital technology innovation, immediate usability has become the main criterion in choosing materials for film production Therefore digital production gravitates toward immediacy and gradually neglects the spatial expression characteristic in film image mentioned above. Therefore, in the context of digital production, knowing the various digital image productions and their characteristics, and carefully selecting the means of image expression is a priority. Examining the characteristics of the film image performance on the negatives and the difference in the RGB tri-color principle on the digital image, and conducting an empirical study on the digital production of the RAW file of the short film 《APRlCOT》, this article stresses that digital printing, digital dailies, and digital file management are the fundamental concepts of digital film production. Referring to the difference between RGB full-color incorporating negative and concept and YUV color sample coding, we also proceed with another empirical study on the ability of the RAW tiles image-expression in describing color and lighting. This led us to further stress that the familiarity of the production, the work procedure, and the concept of negative of the RAW code can improve the performance of video art, and the importance of onsite supervision and careful selection of digital file format in accordance with production needs, as we intend to offer appropriate concepts to this digital production trend.