Originally Posted by GlenC
You should be getting what you pay for. An ISF calibrator should have $10K - $15K of equipment to do a proper calibration. Calibrators can charge what they want.
Yes, but I don't want their having to buy all this equipment to calibrate any TV they encounter under any lighting conditions to be my $$ problem, and anyone who learns to do *their own particular* TV doesn't have to make it their $$ problem, either. Having to buy all that equipment inflates the cost for setting up any one set considerably: any one customer is subsidizing your ability to set up other sets. *You* have to work with many different sets. But a typical owner has concern with only *one* set -- theirs. They can potentially learn a few tricks and buy *no* equipment at all -- except a good alignment DVD and maybe a memory stick.
Yes, for movies and film based material, D65 is correct for accurate reproduction. If it was produced at D65 it should be displayed at D65 to be correct.
What does "produced" mean? I see a large proportion of movies and video that have obvious color casts, both accidental and for artistic effect. Are documentaries that show bluish snow or pinkish (real gray) rock "produced" at D65? And what do you think happens to pure white on a DVD or broadcast? You should be satisfying the *eye,* not an arbitrary standard. We are not matching fabric color swatches or printing inks, here, but attempting to reproduce what the real world of movie and video production throws at us.
BTW, you didn't address gamma. You *do* calibrate gamma, right?
However for old B&W movies, an additional calibration at D54 may be appropriate.
Sheer nonsense! Who told you this? The makers of B/W films had no control over the color of white. Their film didn't record it. The projection systems were whatever color the arc lamps produced, and now are generally xenon-arc. What are you trying to accomplish with D54? The experience of average Joe in a typical theater of 1030-1945? Why would one want to do that? If the whites and all grays are uncontaminated by color, you have done your best, and approx 6500K is perfect! Want it warmer, turn the color-temp control to Warm.
What you are saying is, you can go outside, look at the clouds, then go inside and look at your TV and say they are the same color, by memory?
You're misrepresenting my method on this entirely! Read my Article #03. I find this procedure very easy to do in a home environment. But you couldn't do this professionally in, say, an industrial environment. Hence the need for colorimetry instruments for *your* purposes.
If you are happy with the way you have white calibrated, then you are set.
Yes, indeed, and I'm suggesting ways others might get there, too.
How uniform is your gray scale tracking from 10IRE, 20IRE.100IRE? what about color decoding, is Red the proper Red?
My God, you really haven't read any of the articles, have you? Please do so before you assume I'm a complete novice. "Is red the proper red?" Jeez, this has been beat to death here and in other threads. On this late XS/XBR series of Sony sets, one has only so many parameters that can be adjusted, and you are stuck with the CRT phosphors Sony gave us. One already has to fool around with the three-color gamma settings to get a linear gray scale in the brightness range of relevance. Then you run out of options, and you move on. There are 16 increments in the four color-matrix parameters (RYR, etc.), not 128. You pick the one setting for each that gets the closest, and move on. The *encoding* matrix for HD isn't consistent from broadcast station to station, and theory says that the current CRT phosphors aren't really correct for the HD standard for perfect color anyway. Why are we agonizing over three-decimal-place coordinates in perceptual color space?
A television set is an *entertainment* system, not a precious religious icon! Not an antique violin! Source materials available for consumption vary widely in their perfection, no matter the format. When the TV is correctly adjusted according to common-sense rules that take *vision* into account, what you see can bring great pleasure. That's the point! Garbage will still be garbage. An expensive ISF calibration has to be evaluated in terms of benefit/cost ratio for the *result.* No amount of hand-waving statements about IRE levels (Of course you mean image- *brightness* levels, right? How many people do you think understand IRE levels?), the difference between D65 and 6500K, etc. means squat if the picture does not please the person watching.
My goal has been to suggest ways to achieve the best picture possible with these late XS and XBR CRT sets (and no others!), based on solid principles and sound engineering experience, and then publish what I have done so others can try it. Folks should judge based on the results.
it would be great if 10% of TV owners could properly set their TV.
The ones who are truly interested had to at least get to this forum, and a subset of those actually dig in and try stuff. Three cheers! Others have two choices: (1) endure what they have purchased, out of the box, having only the User Menu at their disposal; and (2) hire someone to do the work for them at whatever cost. I'm addressing only the folks in this forum; I don't sell any TV-setup services.