The HDR (High Dynamic Range) is a new tool still rarely used in the cinematographic field but which tends to be democratized. Like any new tool, it brings a lot of questions, about pre-production, filming, post-production and television. This new tool pushed by television is slow to establish in the field of cinema. For the first time with the HDR a new process first appears on televisions before being used in the cinema. This new situation questions the supremacy of the cinema which has always been a technical standard. The purpose of this thesis is to review the fundamentals and the terms used so that everyone can understand, regardless of his level of knowledge, the contributions and limitations of this new technological process. The flattening of the theoretical knowledge to better explain and facilitate everyone to understand the technical issues that HDR raises. It thus serves as a guideline for considering the entire HDR cinematographic chain of its theory, for its use on the stage. Then the exposure of its image to its treatment by the laboratories during grading. Then from grading to different diffusion processes. Then from the viewers' perspective on this new technology as to its future implementation.
Keywords : HDR / Contrast / Dynamic / Color / Sensor / Projection / Exposure / Eye / Sensitivity / Dolby / Éclair / Curves / Grading / HLG / PQ