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Samsung (or other) LCD display question about black levels.

418 Views 1 Reply 2 Participants Last post by JGene, Feb 24, 2005

cissado

Discussion Starter · Feb 24, 2005

"No detail below 10 IRE" Is what the ISF calibrator said my Samsung produced. I have a LTP227w LCD TV. The DVD calibration went well but the comment is for HD. Has anyone with a Samsung noticed this problem? The guy said he's never seen it before but has never worked on this particular set. He's worked on a couple of thousand other sets though.

I called Samsung Tech and they said it was within spec and I could not get any better than that. Just wanted to check here and see if anyone else sees the same thing.

Just a little explanation from a non techinical standpoint of what I saw regarding the quote above... The chart that goes down in 10% blocks in different shades 40%, 30%, 20%.... that's it, there was no 10%. The 10% bar showed to be exactly the same color as the 20% bar. I hope that made sense.

Any insight on this?

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JGene

· #2 · Feb 24, 2005

Well, I would imagine than an ISF calibrator would know what he or she is doing when testing your TV. That said you could still try to fiddle with the brightness and contrast ratios a bit--maybe you can brighten up the backlight a bit to see that last 10% of black shades.

This is one of the reasons why I love sRGB in an HTPC setup...you can tweak your gamma curve to adjust brightness and constrast values in a way that you could never do on the monitor alone. The original master gamma cutoff values on my Sharp LCD allowed for a maximum total of 5.8M (180^3) colors. With sRGB the maximum total color output is 9.3M (210^3) colors.

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