Sharp LC-xxLE830U SM ‘Yellow’

[Anonymous]

Has anyone tried to ‘tame’ the yellows in these sets by using the monitor gammas (MG) in the SM, e.g., MG1-6Y? Not sure what it would do if I muck with it. I was curious if anyone tried this.

Thanks!
Greg

Topic

[Anonymous]

The yellows aren’t the main problem of the Quattron displays… it’s fairly easy with the user menu controls to get Yellows accurate, color-wise. They do end up slightly oversaturated, but that doesn’t really look too bad. The biggest problems I had with the Quattron I reviewed (LE925 series) was that there wasn’t enough adjustment range in the color brightness controls to get green and cyan as bright as they should be… they started out around 70% to 80% too dim (referenced 75% white with 75% colors used for measurements) and after using all the adjustment range, they ended up still being about 40% too dim. There’s also a problem that afflicts Caucasian fleshtones… some narrow luminance range (guessing around 95%) goes green-ish gray and you see those patches of greenish-gray mixed with nearby fleshtones that look normal. So people look like they may be turning into zombies. The only way I could fix that was with the 20-point grayscale calibration in the Lumagen Radiance.

Having lived with a Quattron for a couple of months, if I got a call to calibrate one, I would seriously consider declining to do the calibration because there were just too many problems that couldn’t be fixed with the limited grayscale controls and the funky CMS controls.

[Anonymous]

Hi Greg,
I recently did and 835u with very nice results. I didn’t find a need to enter the SM. CMS worked pretty good. I adjusted CMS normally with no special techniques or procedures.

[Anonymous]

Thanks, Don. That’s good to know. Certainly looks great in your .pdf.

Did your reference material look as good as the charts predicted? I ask because one of the major problems with last year’s models was that the dE’s would be fine on the charts, and actual reference material didn’t look so good and settings had to be changed. From what you state above, though, it looks like that’s not a problem anymore with the 2011’s.

Thanks so much for the input, Don!

Best,
Greg

[Anonymous]

The picture looked great. Obviously checked with reference material. ChadB also reviewed a 732 model I believe and also stated that the past problems with the Sharp color system have been fixed. Good luck on your set.

[Anonymous]

I calibrated this LE830U on Friday and everything went fairly well except for the fact that I still saw a discrepancy between what the dE’s were showing me in the CalMAN color gamut, and what my eyes were telling me when I checked reference material.

After optimizing in CalMAN to minimize dE’s in color gamut (I had to significantly increase the Value, i.e., luminance, of blue and green to do this), greens and blues looked totally washed out using either patterns/demo loops on test BDs or actual reference material. I had to decrease the luminance of green and blue by eye in order to get the picture to look correct. Unfortunately, I didn’t have time to change from the 75% luminance level in CalMAN to test and see whether a different luminance level in the color gamut would have given results that correlated better between CalMAN and reference material.

One other strange thing what that, although it said in the manual there was a 10-point WB available, I couldn’t find it! The grayscale wasn’t bad with the 2-point WB balance controls, so it wasn’t a bit deal. Anyone know how to find this? (I’m almost afraid to ask…I have a feeling when I hear it, it’s going to be a ‘duh!’ moment! :o)

Greg

[Author]

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