Originally Posted by Xa4
This question has been passed along -i'm sure- a couple of times, but i've read some contradiction in the replies. When i watch a HDR movie, or play a HDR enabled game, should i have dynamic contrast Off, Low, or high? I have the BL on 20 off course and the LED light on High (as it is set like that on default).
I can't remember from the large number of posts who did the testing, but some users here have professional meters. My personal crib-notes says:
Smart LED controls local dimming on dark parts of the screen (will bleed).
Low =0.006 nits to 500 nits. High=0.006 nits to 1400 nits but more blooming. Off=0.06 to 500 nits.
It should be High for HDR content, to get the max contrast.
It should be Low for SDR content.
ie, the TV cannot produce more than 500 nits unless Smart LED is High.
Dynamic Contrast: Software based contrast enhancer. Used to crush blacks and clip whites in earlier fw.
Off for SDR content
Low for HDR content.
Obviously much of this is personal preferences, and what looks best to you, but
if you wanted to know what's been discussed before, it's above. HTH.