xilinx & edamon,
Welcome to the AV SCIENCE forum! The more work one puts into any endeavor, the more one will get out of it. If understanding all of life was intuitive we wouldn't need science, mathematics, doctors, universities, etc. The Society of Motion Picture and Television Engineers (SMPTE) has been recommending 6500 Kelvins backlighting, along with viewing color television images in a darkened room, for decades.
The Imaging Science Foundation (ISF), for over ten years now, has been alerting consumers to the fact that TVs aren't plug-and-play. Television manufacturers have been largely delinquent in effectively explaining to purchasers of their products how to get the best pictures from the devices. Even many home theater professionals still consistently overlook a critical element in designing and specifying their systems. That critical element is the viewer! SMPTE's human factors research resulted in standards and practices for color television viewing environments that benefit the viewer. Those benefits encompass human perceptual issues as well as viewing comfort.
A "backlight level" test pattern has been included in every home theater setup and calibration software title worth its salt, including: 'Avia Guide to Home Theater', 'Avia PRO', 'Sound & Vision Home Theater Tune-Up', 'A Video Standard', 'Video Essentials' and 'Digital Video Essentials'. Unfortunately, only the last three titles have offered substantial explanation behind the importance of viewing environment conditions and 6500K backlighting in particular. The other discs simply include the pattern with no explanation for how to use it. Our web site is one of the few places in the world to find extensive discussion of video viewing environment technologies and solutions.
Best regards and beautiful pictures,
G. Alan Brown, President
"Advancing the art and science of electronic imaging"