ISO 5-1:2009建立了术语、符号、功能符号和坐标系，以描述几何和光谱条件，用于测量样品在摄影、图形技术和辐射测量中调节辐射通量的程度。 ISO 5-1:2009主要提供了一个系统，用于描述测量或指定摄影和图形艺术材料的透射和反射特性的方法。ISO 5-2、ISO 5-3和ISO 5-4规定了与此类测量相关的几何和光谱条件。

ISO 5-1:2009 establishes terms, symbols, functional notations and a coordinate system to describe geometric and spectral conditions for the measurement of the degree to which a specimen modulates radiant flux for applications in photography, graphic technology, and radiometry. ISO 5-1:2009 primarily provides a system for describing methods of measuring or specifying the transmission and reflection properties of photographic and graphic arts materials. The geometric and spectral conditions associated with such measurement are specified in ISO 5-2, ISO 5-3 and ISO 5-4.