Here's the thing I can't wrap my head around...
So, certain higher end TVs (I have an LG LM7600) DO support displaying Full RGB range (0-255). You have an option to switch back and forth in the TV Settings for whatever HDMI Input you are on.
So, why would you set this to Full and then have the PS3/PS4/whatever set to "Limited"? If you're essentially telling the TV to expect a Full Range signal, shouldn't the console also be set to output the same full range signal? Why would you have those settings mismatched?
Makes 0 sense to me, yet half the people in these threads say to do so, while the other half say to make sure they match.
Yes, I'm not sure what has changed when I flip these around. I'm not sure if I'm helping my image or hurting it.
Hmmm. I can only speak from my experience with a Panasonic S60 Plasma. I've touched on it some in this thread, but I'll explain further. Sorry in advance for the long post, but it seems folks are definitely interested in learning more about this. I'm no expert, but here's what I've learned just through experience, trial and error.
My TV has 3 RGB options: Auto, Nonstandard (0-255), and Standard (16-235). By default, my tv was set to "standard." With my PS3, I always had its RGB set to "limited." Thus, the TV and the PS3 matched, both requesting a standard RGB setting.
Enter the PS4.
By default, the PS4's RGB range is set to "Auto." It even shows up as the "recommended" setting. Here's where things get strange for me. Having my PS4 on auto and my tv on standard resulted in massively crushed blacks. If you aren't sure, just pull up the PS4 web browser and go to this link:
http://www.lagom.nl/lcd-test/black.php At least the first two rows were completely invisible for me, which isn't what you want at all.
I can only assume there was some type of miscommunication between my PS4 and the TV. With the PS4 set to auto and my tv set to standard, the PS4 should have detected this and thus, output in the limited RGB setting. Instead, I think it detected only that my TV was
capable of outputting the Full RGB, never detecting that's not what I had enabled on the TV. Again, the default option on the TV was set to "standard."
The moment I changed my TV over to "nonstandard" or even "auto," the PS4 image instantly became brighter. The crushed blacks were gone. I was absolutely stunned. The same thing was true if I switched the PS4 to Limited and left the TV on Standard.
I played around with the settings a bit more and here's what worked for me. With the following PS4 and TV RGB settings, my PS4 picture was excellent and there are no crushed blacks.
PS4: Auto
TV: Auto OR Nonstandard
PS4: Full
TV: Auto OR Nonstandard
PS4: Limited
TV: Standard
The next set of settings always result in crushed blacks for me.
PS4: Auto
TV: Standard
PS4: Limited
TV: Auto OR Nonstandard
PS4: Full
TV: Standard
I should also add that your other calibration settings for your TV certainly play a role as well. I kept applying settings I had found online by trusted sources, so it made no sense to me that everything still appeared incredibly dark in my games. So much so, that I had to crank up the in-game brightness settings for both Battlefield 4 and Tomb Raider.
When I finally figured out the correct RGB for my PS4 and TV, I went back and re-applied those settings (I used the ones from CNET). I opened up the PS4 browser and used the black level test I linked to previously. Again, I was stunned. It was nearly perfect and the first two squares were the only ones I had trouble seeing. A few tweaks to the brightness and my black level was perfect.
I elected to leave my settings on PS4 as Auto and the TV as Auto. Some games don't even take advantage of the shades of black you can get with the Full RGB, but this this ensures I would get that extra level of detail for a game that happened to use it. 99% of the time though, you'll be fine with either RGB Full or RGB Limited....so long as you
make sure the PS4 settings match the TV.