AVS Forum Special Member
Join Date: May 2008
Location: San Francisco - East Bay area
Mentioned: 3 Post(s)
Tagged: 0 Thread(s)
Quoted: 188 Post(s)
Calibrating for each source is an "old tape" from the days of analog video that people can't give up. Digital video sources RARELY need a custom calibration for each source. And by RARELY, I mean almost never.
In the analog days, a voltage produced by the source component (laserdisc player, VCR, etc.) determined how bright the screen would be. Getting those voltages and brightness levels identical across many products was damn near impossible. So analog components usually needed "custom" calibrations because none of them "matched".
In digital video, 1s and 0s determine how bright each color is. As long as the video signal is "in tact" (not damaged), you will get the correct brightness levels, guaranteed. The only exceptions are when a digital component contains video processing and that processing alters the video source on purpose or by accident. That's pretty rare, especially if you have chosen all the correct settings in each source component... the settings that disable any internal processing.
So a calibration of a "modern" all-digital video system really no longer needs separate calibrations for each source except in some rare cases.
"Movies is magic..." Van Dyke Parks
THX -- ISF -- HAA