D50 and D65 ambient lighting standards

D50 & D65 (Standard Illuminants): Standardized light profiles created by the International Commission on Illumination (CIE) to represent precise variations of natural daylight. D50 mimics a warm midday sun (5000\text{ K}) and is the global color-critical standard for flat art, print archiving, and graphic design. D65 represents a cooler, average north-sky daylight (6500\text{ K}) and is the foundation for video editing, modern sRGB web displays, and transparency viewing. In a camera digitizing setup, matching your light box or copy lights to these specific spectrums guarantees a uniform, predictable “white point,” ensuring that the colors your camera captures can be translated perfectly to a computer screen or physical print without guessing.