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Backlight and contrast adjustment - Page 2

post #31 of 40
6/12/12 at 5:32pm
95 is fine if that's what is comfortable for you under your lighting conditions. I use a lower setting because that is what works in my room with low to moderate ambient light.
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post #32 of 40
6/12/12 at 5:49pm
Thanks for the quick reply. I am never averse to trying something, so I will try it at 82.I hsave never been able to properly set contras anyway when I've used DVE or the WOW discs. Would I need to readjust any other controls like brightness or gamma.? Thanks again
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post #33 of 40
6/12/12 at 6:25pm
What did your calibrator set gamma at? Did he use the 10pt controls?
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post #34 of 40
6/12/12 at 7:41pm
He did use the 10 pt.controls and he set it at 0. There are times I've moved it to +1 though when I thought the image was a little dark
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post #35 of 40
6/12/12 at 8:01pm
Sounds good to me, no problem changing gamma and contrast a bit to suite your tastes. just don't change the 10 pt., WB or color controls
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post #36 of 40
6/12/12 at 10:01pm
HEELS brings up a good point. I don't remember seeing many, or any really- not that I've seen them all, pro calibration reports where the cell light is maxed and contrast is in the low 80's. This includes Cnet. Add to the fact that the engineers that made these sets didn't seem to know know that correct performance was at max cell light and 80 contrast, and consequently they didn't locate the 10 point white balance points properly. It just makes me (who otherwise knows next to NOTHING on the subject) a little skeptical - or at least very curious. How can so many professionals be so totally ignorant?
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post #37 of 40
6/13/12 at 5:27pm
KJ: I tried moving the contrast down to 82. I then popped the WOW disc in just to make sure brightness wasn't affected. I had to move it up to 58-60 (from 52). I'm just not sure how lowering the contrast affects everything else (greyscale,gamma, color etc.). I watched a couple of episodes of Boardwalk Empire on Blu-Ray with the contrast at 82. To me, everything looked a little dimmer and I didn't see any real improvement in the picture. To be fair though, I wasn't satisfied with the picture at 95 contrast either. i can't put my finger on it, but there's something about my picture that's a little off.....and I think it has to be with the contrast. I can't get that "pop" I'm looking for. maybe I'm just being too picky, but I'm always looking for adjustments that may help.
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post #38 of 40
6/13/12 at 6:38pm
HEELS,

I have the same TV, the 64D7000. The grayscale tracking for this model is very sensitive to the setting of the Contrast control. Changing Contrast from 95 to 82 can increase delta E sometimes by 3 to 5 in the mid and upper range.

The Cell Light, however, has no effect on grayscale. Because of this behavior, I would suggest that you put the Contrast back to where the calibration was performed and use the Cell Light to reduce the "brightness" if desired.


Larry
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post #39 of 40
6/13/12 at 9:26pm
Thanks for the info. Larry. That makes sense. I had a feeling that changing the contrast would affect other things!
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post #40 of 40
6/13/12 at 10:09pm
Quote:
Originally Posted by HEELSFINL4 View Post

KJ: I tried moving the contrast down to 82. I then popped the WOW disc in just to make sure brightness wasn't affected. I had to move it up to 58-60 (from 52). I'm just not sure how lowering the contrast affects everything else (greyscale,gamma, color etc.). I watched a couple of episodes of Boardwalk Empire on Blu-Ray with the contrast at 82. To me, everything looked a little dimmer and I didn't see any real improvement in the picture. To be fair though, I wasn't satisfied with the picture at 95 contrast either. i can't put my finger on it, but there's something about my picture that's a little off.....and I think it has to be with the contrast. I can't get that "pop" I'm looking for. maybe I'm just being too picky, but I'm always looking for adjustments that may help.

HEELS,

To be fair to those who are recommending max cell light/low contrast, I do believe that you would have to do a full calibration from that starting point. You had a professional calibration done from high contrast/low cell light, and simply flipping your contrast and cell light settings would almost certainly result in an inferior result.
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