Originally Posted by zeonstar
Good to hear from you. Thanks for the continued assistance.
1. Thanks for this. I will switch to BT.1886 and re-adjust this evening.
2. I'm glad I could help. What are you referring to when you say very bottom or top? I do not know what my Gamma was set to out of the Factory, but it was at 1.9 last night when I got to that setting. I forget why I set it that way. I was probably trying to fix my blacks.
3. I will still admit this subject is pretty advanced for me. I appreciate the advice to set my LG to 444. Why do you suggest that if I may ask? As I understand it, setting it to 444 will mean my player does more "work" before it sends it to the LG C8 correct? As a refresher, my BD player is a Sony X800M2. (Which also has an RGB option in addition to auto, 422, and 444 by the way.)
How is that better than the C8 doing more of the conversion? From my own (No doubt flawed) logic, I would assume my expensive TV does a better job processing than a $300 Blu-Ray player. But I'm guessing it's not that simple.
We would like to release a companion disc late Q1 of next year. It will add DTS:X and Atmos plus Dolby Vision 4.0 content.
2. Setting brightness will lock the bottom and setting contrast will lock the top. Then changing gamma will move the curve between them. So brightness and contrast should not change.
3. I tested 422 and 444 at both native and scaled and compared them using the color space eval and scaling HD patterns and selected what I thought was the best. A loupe will help you see the pixels up close, which you need for chroma alignment. Even more so in 8K!
The Panasonic BD players have chroma processing that is better than any display on the market. So its 444 output will be better. Displays typically use bilinear, which is soft. Many BD players also use that. The problem is when displays convert between 444 and 422.
If you want to see how good chroma can look on your C8, I can show you. The problem is, in that mode, the video goes 8-bit so you get massive banding.
Send in 444. Go to Advanced Video->Resolution->Chroma Zone plate locked. The left and right 3rds of the image will be dimmer than the center. Now on the LG, there is a menu where you can change the label of a source. It changes with each generation, so finding it something you will have to figure out. If you change the label from the default to PC, then you will be in 444 mode where the display does not ever convert between 422 and 444. The first time you do into this mode, it will switch to a different picture setting, so you need to change it back to cinema and also change all of the settings to match what you had before. Now when you look at the pattern, the side 3rds are as bright as the center. Chroma resolution is now improved.
In PC mode several image controls are disabled, but it is stuff you should turn off anyway if our goal is to preserve artistic intent. If you like those settings, such as detail enhance or noise reduction, then this mode would never work for you even if it stayed in 10-bit. I believe the 6 series stays 10-bit while 7, 8 and 9 do not.
Chroma resolution is better, but now there is banding! Even the smoke in the menu shows severe banding. But this also makes a nice demo for the quantization rotate pattern. In PC mode, the bottom 10-bit looks just like the top 8-bit. When you switch the label (maybe it is called icon) back, then the bottom 10-bit section looks much smoother as you are 10-bit again.
This pattern is a good one to also look at when comparing 422 vs. 444 in. We put little slivers of it on the top left of the color space eval pattern. Top right is the other chroma pattern. Then the bottom are like the chroma Cb and Cr RGB legal patterns.