[mythtv-users] Monitor adustment with SMPTE bars/ was: color adjustment

David Brodbeck gull at gull.us
Wed Jan 27 05:28:54 UTC 2010


On Jan 26, 2010, at 8:39 PM, Devin Heitmueller wrote:
> In terms of the your comments on the accuracy of the various formats,
> I certainly agree.  However, I might argue that if the colors are
> visibly off then even the color bars provided on DVD are probably good
> enough.  It definitely won't give him studio quality, but would give
> him something good enough for an untrained eye.

For home use, if it looks good enough, it is good enough. :)  (That  
was also my motto when I worked with CCTV surveillance camera setups.   
Although in that case it was more like, "if the gaming inspector says  
it's good enough, it's good enough.")

The sort of calibration procedure Brian described is meant to provide  
a reasonably consistent standard for a studio environment.  Actual  
color perception by the human eye is a lot less consistent.  Just  
changing the color of the wall around the TV set, or changing the  
lighting level in the room, will make the colors appear different to  
the eye.  Heck, I can sometimes detect a difference in color vision  
between my right eye and my left, and my glasses create "convergence  
problems" of their own, although with lenses it's called chromatic  
aberration.

I believe Netflix has the Avia home theater setup DVD.  That's  
potentially one way to get several test patterns, although last time I  
tried it the Myth internal DVD player choked on it.



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