Black level? - AVS Forum | Home Theater Discussions And Reviews
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Black level?

I have 2 mid grade televisions one 4k LG and a 1080 Samsung. Every calibration says to leave black level on low. While the contrast seems better, I loose detail in dark screens. What exactly does black level do?
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post #2 of 2 Old Today, 10:13 AM
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You are probably talking about what is variously termed "HDMI Black Level", "RGB High" (or "Low"), etc. It simply sets the TV to either consumer video standards (16-235) or computer graphics (0-254) ranges. As a rule of thumb, with normal broadcast content, DVD, or Blu-Ray from OTA, set top boxes, or standalone players this should normally be set to Low (16-235). For computers and many media players, consoles, etc., set to High (0-254). The numbers indicate the number of digital brightness steps from full black to full white each setup uses. The absolute light output at full black or full white doesn't change. What changes is WHEN the TV displays full black or full white based on the signal values.

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