"Monitor white reference: In additive mixture, the illumination of the reproduced image is generated entirely by the display device. In particular, reproduced white is determined by the characteristics of the display, and is not dependent on the environment in which the display is viewed. In a completely dark viewing environment, such as a cinema theater, this is desirable; a wide range of chromaticities is accepted as “white.” However, in an environment where the viewer’s field of view encompasses objects other than the display, the viewer’s notion of “white” is likely to be influenced or even dominated by what he or she perceives as “white” in the ambient. To avoid subjective mismatches, the chromaticity of white reproduced by the display and the chromaticity of white in the ambient should be reasonably close."
Originally Posted by sotti
Originally Posted by avse
Hello to all, I am new in the forum and my question this is:
in the monitor with white point correctly calibrated, the white must appear pure white at dark room ? or blue for D65 white point and yellow for d50 white point ?
What color should appear this:
A large range of colors will appear pure white in a darkened room. Your eye is extremely adaptive to the brightest color, so D93 all the way through D50 would all appear to be untinted white without another bright known color to reference.
from Charles A. Poynton's, 'Digital Video and HDTV Algorithms and Interfaces'
A vital and fundamental key to understanding how electronic imaging works is to have a foundational knowledge of the human visual system. Human factors cannot be divorced from display system design/performance/calibration. Confusion, misapplication, and misinformation in the discussion of display performance are frequently due to a poor understanding of how vision works. Any formal course in video technology worth its salt will begin with the study of the human visual system. The phenomenon of adaptation in human perception- what it is and how it works- is a fascinating study that is essential for correctly applying video technology.
Best regards and beautiful pictures,
G. Alan Brown, President
A Lion AV Consultants affiliate
"Advancing the art and science of electronic imaging"