ISO 5-4:2009
Photography and graphic technology -- Density measurements -- Part 4: Geometric conditions for reflection density
Product Details
ISO 5-4:2009 also specifies the requirements for polarization (if that feature is included) and for backing material, and makes recommendations regarding accuracy and linearity.
Although intended primarily for use in the measurement of the reflection characteristics of photographic and graphic arts materials, ISO 5-4:2009 is also applicable to the measurement of these characteristics for other materials.