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For those struggling with brightness, contrast & backlight settings on LCD's - Page 5

post #121 of 126
Quote:
Originally Posted by hungro View Post



If it can't be made barely visible then go with the setting that is darker.

any reason why? I thought you wanted the lowest setting that still shows 17 and up flashing
post #122 of 126
Quote:
Originally Posted by PlasmaPZ80U View Post

any reason why? I thought you wanted the lowest setting that still shows 17 and up flashing

Normally. On a display with good black levels, 17 corresponds very closely with the Light Illusion pattern used to set black prior to profiling for LUT production. However, there are exceptions, some of it quite subjective. Take a look at this post of mine earlier in this thread - http://www.avsforum.com/t/1351213/for-those-struggling-with-brightness-contrast-backlight-settings-on-lcds/30#post_20771724
post #123 of 126
Quote:
Originally Posted by PlasmaPZ80U View Post

any reason why? I thought you wanted the lowest setting that still shows 17 and up flashing


Not necessarily, you don't want to have your all your near blacks to be elevated. It is a kind of damned if you do, damned if you don't. If 17 is too bright you maybe loosing contrast trading off for the last little bit of shadow detail. This is a judgment call and your room lighting will be important. My 92" DLP will cause 16 to be the slightest bit visible with your nose to the screen if you allow 17 to be visible. I opt for visible 18 and let the rest of it drop off, the overall pitcture quality is better but dark scenes with the lights on suffer.. especially since the display is glossy.
post #124 of 126
Quote:
Originally Posted by buzzard767 View Post

Normally. On a display with good black levels, 17 corresponds very closely with the Light Illusion pattern used to set black prior to profiling for LUT production. However, there are exceptions, some of it quite subjective. Take a look at this post of mine earlier in this thread - http://www.avsforum.com/t/1351213/for-those-struggling-with-brightness-contrast-backlight-settings-on-lcds/30#post_20771724

does a display with a native CR of 3,000:1 have what you consider good black levels or are we talking about 2012 panasonic plasma black levels (10,000:1 and up native CR's)?
post #125 of 126
Quote:
Originally Posted by buzzard767 View Post

Normally. On a display with good black levels, 17 corresponds very closely with the Light Illusion pattern used to set black prior to profiling for LUT production. However, there are exceptions, some of it quite subjective. Take a look at this post of mine earlier in this thread - http://www.avsforum.com/t/1351213/for-those-struggling-with-brightness-contrast-backlight-settings-on-lcds/30#post_20771724

I displayed that Light Illusion pattern on my PS3's XMB and saw that when I reduced brightness one click from the setting that shows digital 17 flashing (brightly), all the squares got much darker and the top left square (darkest one) disappeared mostly except for having some noise there that resembled the shape of the square... in other words on the verge of being visible (there was definitely something there, albeit extremely faint).
post #126 of 126
Quote:
Originally Posted by alluringreality View Post

I haven't followed the HCFR fork after Version 2.1, but on the old version you can look at the measurement information in terms of RGB to find where a display might clip near white. On the right side of the HCFR Measures screen there is a "Display" setting that has pickboxes, which has choices like xyY or RGB. The measures screen also has a "Selected color" area that also displays R, G, and B numbers. There are also the "Target" bars that show how red, green, and blue relate to each other as a percentage (%), but I suggest looking at the R, G, and B numbers that generally are comparable to Y.

If you measure grayscale you would want the R, G, and B numbers to be approximately equal. As you turn up the contrast control you may find that one of the colors might stop increasing along with the other primaries. For example say a TV runs out of red, so R will get to a point where the R number might go no higher, but the B and G numbers can get much higher. Since R is unable to get any brighter, it would be necessary to set G and B to that same maximum value in order to display gray.

I've missed your reply. Thanks for the help;)
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