Panasonic UB820/UB9000 4K UHD Blu-ray player

[DVD Josh]

Originally Posted by Ant1010

I can see that. But I do disagree with you as well. The C9 is definitely a high end display, I don't know how you can't consider it one. Yeah if Panny's OLEDs were sold in America it would most likely be coming in third behind it and Sony. Also its pretty damn close to being the best after multiple results from shootouts

According to rtings.com:

"The LG C9 is a high end 2019 OLED TV, and directly replaces LG's 2018 C8."

So at least one person agrees with Ant. I've never seen one so I personally have no idea.

[panasonicst60]

Originally Posted by Ant1010

hence why you shut off DV. If you have DV on yes Optimizer doesn't work. didn't I just write that lol. I'll pm Robert have him chime in here, he knows much more about this then I do.

I would strongly advise NOT to turn DV off. I like the Panasonic hdr optimizer, but don't kid yourself that it's better than DV. It tone maps contents better in most cases. Have you compared them yourself yet?

[sapiendut]

The two have completely different functions. If the Display can’t do more than 800 nits, using DV will not “help” as DV is dealing with 1,000 nits and up.

[panasonicst60]

What do you mean by the two has different functions? To sum it up on a simple level, they both are tone mapping. There are displays out there that can't do 800 and DV still benefits that particular display.

[sapiendut]

HDR Optimizer is Tone REmapping. It remaps HDR to a target nit level. DV is tone mapping, NOT remapping.

[pbz06]

I use DV with DV content. I used HDR Optimizer for HDR10 content (which only kicks in for >1,000 nits). Simple enough, and gave me best results.

[panasonicst60]

Yes similar but of course not the same. Where did you get this?"If the Display can’t do more than 800 nits, using DV will not “help” as DV is dealing with 1,000 nits and up."

[panasonicst60]

Originally Posted by pbz06

I use DV with DV content. I used HDR Optimizer for HDR10 content (which only kicks in for >1,000 nits). Simple enough, and gave me best results.

That's exactly what I do. Agreed!

[pbz06]

Originally Posted by panasonicst60

That's exactly what I do. Agreed!

Aquaman is a good example…one of the early scenes when the dad is waiting on the pier, there’s a bright sun in the background. Turning Off DV and using Optimizer, still clips it a little bit. Keeping DV on will tonemap it better and resolves better details. In this case, and most others I’ve tested, the dynamic metadata works better.

The Optimizer is money when watching high nit HDR10 content on OLED…my A9G blows out a lot of the highlights (by design), but the Optimizer does a good job of maintaining overall picture brightness and resolving only the blown out details.

[tama]

It always amazes me when people start digging themselves into a hole they don't stop to jump out but continue to dig in.

[panasonicst60]

Originally Posted by pbz06

Aquaman is a good example…one of the early scenes when the dad is waiting on the pier, there’s a bright sun in the background. Turning Off DV and using Optimizer, still clips it a little bit. Keeping DV on will tonemap it better and resolves better details. In this case, and most others I’ve tested, the dynamic metadata works better.

The Optimizer is money when watching high nit HDR10 content on OLED…my A9G blows out a lot of the highlights (by design), but the Optimizer does a good job of maintaining overall picture brightness and resolving only the blown out details.

I was always skeptical of people saying to turn off DV and let hdr optimizer do the work. I also tested it out myself before coming to a conclusion.

[pbz06]

Originally Posted by panasonicst60

I was always skeptical of people saying to turn off DV and let hdr optimizer do the work. I also tested it out myself before coming to a conclusion.

My first few rounds of testing focused on HDR10 movies only, so I was fixated on that. For high nit content, I do prefer using the Optimizer with static data. The benefits were very clear when toggling On vs Off...the overall brightness stayed almost identical while only affecting the highlights/areas where they would clip. Doing that heavy lifting for an OLED and passing it off as static 1,000 nit data to the TV made it more manageable and I didn't notice any negatives. The A9G can easily tonemap the rest.

Geoff noticed some banding that gets introduced, but I have not yet. I do enable Smooth Gradation (Low) so maybe that's why? Either way, I like being able to see more details in areas that would be clipped otherwise.

The dynamic nature of DV + OLED seems to work as intended, and looked better in every scene I tested vs HDR10 + Optimizer. Including the horse scene on the S&M test demo. I didn't put too much weight into that initially because I don't know how test/demo materials worked, and waited to test more real movie scenes. At the end of the day, I settled on keeping DV enabled for DV content, and using the Optimizer only for HDR10 (I wish I can set it to on for > 1,000 and off for less, hehe).

[Geoff D]

Originally Posted by pbz06

My first few rounds of testing focused on HDR10 movies only, so I was fixated on that. For high nit content, I do prefer using the Optimizer with static data. The benefits were very clear when toggling On vs Off...the overall brightness stayed almost identical while only affecting the highlights/areas where they would clip. Doing that heavy lifting for an OLED and passing it off as static 1,000 nit data to the TV made it more manageable and I didn't notice any negatives. The A9G can easily tonemap the rest.

Geoff noticed some banding that gets introduced, but I have not yet. I do enable Smooth Gradation (Low) so maybe that's why? Either way, I like being able to see more details in areas that would be clipped otherwise.

The dynamic nature of DV + OLED seems to work as intended, and looked better in every scene I tested vs HDR10 + Optimizer. Including the horse scene on the S&M test demo. I didn't put too much weight into that initially because I don't know how test/demo materials worked, and waited to test more real movie scenes. At the end of the day, I settled on keeping DV enabled for DV content, and using the Optimizer only for HDR10 (I wish I can set it to on for > 1,000 and off for less, hehe).

Nice. When I was doing all my testing with the Optimiser then Smooth Gradation on Low is exactly what I found helped to level the banding back out again, e.g. https://forum.blu-ray.com/showthread...n#post16240338. It takes a little bit more of the signal with it than I would like but otherwise works very well to counteract the banding. However I've had very little need to use the Optimiser and by extension Smooth Gradation (I keep it off if I can help it) because so many titles that I'm buying either have DV (which I'd still rather use than not, even in the gimped Sony implementation) or have a 1000-nit HDR10 mastering (which the ZD9 can display "1:1") so I'm good either way.

For the handful of titles that have 4000 or higher mastering and no DV, usually Sony movies, then I've been using my reduced contrast setting on the TV which lowers luminance but allows 4000-nit highlights to be resolved, and as Sony often blast the shit out of the HDR brightness anyway then it delivers a more pleasantly filmlike image to my eyes with the luminance rolled off a bit.

[LettuceJUMP]

Been following this thread for ages...hoping you educated folks can help.
Little story first. I previously owned a 75” sharp 4k (non hdr). Then I heard I needed hdr.
Went out and bought a b6 65” lg oled and an oppo 203. But I sit very far away, and the b6 did not thrill me. The newer lg 77” oleds were very expensive so I settled on a 75” x900 sony. It’s still probably mid-tier quality, and I switched to the new x800m2 figuring sony to sony should work well.
Here I am today, not 100% blown away by either. Am I better off taking a stab at a ub820 for superior hdr optimization or upgrading to a higher end sony or lg tv?
Thanks for advice.

[bombdog]

can someone plz help, my daughter give a UB820 for my Birthday to go along with my lg C8 ( pro calibrated ) i don't have a clue how or what settings to change to get a good picture. i tried searching but are getting confuse about using or not using the tv DTM vs the player ans whatever setting to change .can someone help me plz
thanks in advance...

[gkolb]

Originally Posted by bombdog

can someone plz help, my daughter give a UB820 for my Birthday to go along with my lg C8 ( pro calibrated ) i don't have a clue how or what settings to change to get a good picture. i tried searching but are getting confuse about using or not using the tv DTM vs the player ans whatever setting to change .can someone help me plz
thanks in advance...

Please help us understand, are you wanting to play 4K UHD discs on your player, or stream? The 820 is a very good disc player.

[bombdog]

Originally Posted by gkolb

Please help us understand, are you wanting to play 4K UHD discs on your player, or stream? The 820 is a very good disc player.

4k UHD i will be using the c8 for streaming....thanks for replying

[dawizeguy]

Originally Posted by panasonicst60

I was always skeptical of people saying to turn off DV and let hdr optimizer do the work. I also tested it out myself before coming to a conclusion.

Worth mentioning is the fact that DV not only tonemaps the EOTF curve, i.e. lighting. It also perform dynamic tonemapping of color rendering in order to optimize color output to the capabilities of the target display. The HDR optimizer can't do this.

[gkolb]

Originally Posted by bombdog

4k UHD i will be using the c8 for streaming....thanks for replying

Sorry I’m not a streamer, someone else will have to help you out.

[panasonicst60]

Originally Posted by dawizeguy

Worth mentioning is the fact that DV not only tonemaps the EOTF curve, i.e. lighting. It also perform dynamic tonemapping of color rendering in order to optimize color output to the capabilities of the target display. The HDR optimizer can't do this.

That is correct. I compared fleshtones and DV beats opitmizer no question.