GOYOJO Colorchecker Ye0188 24 Color Rendition Chart Similar To X-rite Colorchecker Passport Chart Product Introduction The YE0188 was designed with respect of the well- known 'ColorChecker'. Used in photography, film and TV, the chart consists of 18 color patches and a 6-step gray scale. Using the ColorChecker color rendition chart The ultimate goal of any process of photography, electronic publishing, printing, or television is to reproduce all colors perfectly. However, color rendition is a very subjective matter. To help make meaningful judgments about color rendition, a totally non-subjective standard of comparison is needed. The ColorChecker chart provides the needed standard with which to compare, measure and analyze differences in color reproduction in various processes. The ColorChecker is a checkerboard array of 24 scientifically prepared colored squares in a wide range of colors. Many of these squares represent natural objects of special interest, such as human skin, foliage and blue sky. These squares are not only the same color as their counterparts, but also reflect light the same way in all parts of the visible spectrum. Because of this unique feature, the squares will match the colors of natural objects under any illumination and with any color reproduction process. The ColorChecker chart provides an easy way to recognize and evaluate the many factors that can affect color reproduction. To evaluate the effect of varying any given factor, simply compare the chart´s color image as it appears on the photograph, television picture, computer monitor, or printed sample - with the actual ColorChecker. This comparison may be made visually or through optical density measurements. The ColorChecker is proportioned so individual squares are large enough to be measured with a densitometer. Many variables may influence the kind of light reflected by the ColorChecker. These include the spectral nature of the light sources and of nearby objects that may reflect light toward the chart or otherwise affect the illumination. Also, camera lenses may be slightly colored, or may gather stray light from outside the ColorChecker. The type of film, equipment, processing, and (in graphic arts reproduction) printing ink may likewise affect color rendition. Even the very appearance of the ColorChecker and its imaged copy may be influenced by viewing conditions. We mention these variables so that when you use the ColorChecker, you will be aware of them and take steps to control them. In this way, you will be able to know which differences in color rendition can be ascribed to which parts of your system.