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Join Date: Feb 2009
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I know there are many free pattern discs or other formats like .mp4 files, especially for plasma calibration. I have found that my S60 plasma seems to show a severe dropoff in top end gamma (especially 95%) when the Contrast in Cinema mode, PB Mid, is turned up past the default 85, but this only occurs with larger APL patterns, like 12% (it doesn't occur with 10% APL, I've checked). I'm wondering if there are 13%, 14%, or larger (fixed APL) patterns available for grayscale (21-point, 5% steps) on any of the free pattern discs/files available on this forum.
It has to be APL, not standard, since I want to measure on-screen gamma (factor out ABL).
It should have 5% steps, so I can look at 95% stim.
It should be larger than 12% of total screen area, since I already have 12% APL on CMD HD and 10% APL on GCD.
I basically trying to find the brightest contrast setting that doesn't crush whites/highlight details with moderate to high APL content. Standard windows are misleading for this, since they are affected by ABL, especially at the higher stim levels (near white). I can get 50 fL max light output in Cinema mode (with contrast 90 or higher and 10% standard windows), but only 40 fL with default contrast (85). To be fair, I'm not just looking at 95% stim, but basically every level 75% stim and above (75, 80, 85, 90, 95).
-7.1ch Bedroom HT-
SVS Prime Bookshelf and Prime Center
Sony SS-CS5 Surrounds and Cambridge S20 Rear Surrounds