AVS Special Member
Join Date: May 2008
Location: San Francisco - East Bay area
Mentioned: 1 Post(s)
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Quoted: 20 Post(s)
There's really no such thing as daytime 'calibration' because every change in light in the room will decalibrate the display in different ways. Morning, noon, and afternoon sun are all going to be different, cloudy vs clear skies will be different, winter with bare trees will be different than summer with leaves on trees. All a calibrator can do is establish a bright settings that's accurate without external light and whatever the external light does... you just live with it. Typically the calibrator will figure out how high you can set the Contrast control without totally whacking out color and if it can't be set much higher than the dark room calibration, they will look for some brighter mode that can be made reasonably accurate.
Multiple inputs or separate calibrations for different source components are getting increasingly unnecessary as components made in the last few years are, on average, surprisingly accurate. You can even find threads on AVS that discuss the accuracy of different components like Blu-ray players so you can pick one that's accurate and forget about a special calibration. Cable & satellite services are a mess... every channel is different so you can't really calibrate... you're pretty much stuck with what you get. The better channels tend to have fairly accurate color. Other channels aren't probably horrible, but they may not be completely accurate. And there can even be dramatic differences in color between different programs on the same channel, sometimes intentional and sometimes just a result of the age and transfer quality of the program. You can't calibrate for every show or even for every channel so you just calibrate the display and live with what you get via cable or satellite.
The whole "multiple inputs" thing is way overstated these days. In the age of analog, calibrating each product was almost required, but there often weren't appropriate test pattern sources for different components so calibration may not even have been possible.
"Movies is magic..." Van Dyke Parks
THX Certified Professional Video Calibration
ISF -- HAA --
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Widescreen Review -- Home Theater & Sound