Panasonic UB820/UB9000 4K UHD Blu-ray player

[BrownianMotion]

Originally Posted by sapiendut

I also use 900F. I doubt Sony will ever use HDR10+ if it’s merely for Sony’s pride only. Quite honestly, HDR10+ was designed for lower quality TVs and/or TVs with brightness lower than 1000 nits such as my Panasonic OLEd. So at the quality level of X900F, you don’t need HDR10+

The above are just my opinion.

Correction. HDR10+ was designed for 500 nit or lower TVs. You won't really notice a difference between HDR10 and HDR10+ on a 700 nit OLED.

[sapiendut]

Originally Posted by BrownianMotion

Correction. HDR10+ was designed for 500 nit or lower TVs. You won't really notice a difference between HDR10 and HDR10+ on a 700 nit OLED.

Thanks for the correction.

[curlyjive]

I see the latest firmware has added the system gamma control to the 820.

I had thought the on the 820 SDR BT2020 tone mapped to 350 nits. Now I'm reading that the ub9000 has the two projector modes (basic and high) and that the ub 820 only has a 500 nit mapping? Did something change from Kris Deering's original findings that the 820 set to output SDR BT2020 with the optimizer on was mapping to 350 nits?

[Robert Zohn]

Correct, only the UB9000 has 2 projector tone mapping modes, 350 Nits and 500 Nits.

The UB820 only has the 500 Nit HDR Optomizer mode.

[Geoff D]

Originally Posted by sapiendut

Be aware that ALL current players’ DV are clipping a tad.

Currently, the Panasonics are the most reliable player and

But some are clipping worse than others, and not just a 'tad'.

[PissedOffPeoN]

Did the patch make it so the player does not shutdown at 10 minutes anymore? Was there a setting they put it to change what time it shuts off now? If so i cannot find it. Or did the patch just cancel it so it goes off when you shut the player off.

[curlyjive]

Originally Posted by Robert Zohn

Correct, only the UB9000 has 2 projector tone mapping modes, 350 Nits and 500 Nits.

The UB820 only has the 500 Nit HDR Optomizer mode.

So those modes are for outputting hdr. If using sdr bt2020, does the 820 still map to 350 nits with the optimizer on as Kris had originally stated?

[sapiendut]

Originally Posted by Geoff D

But some are clipping worse than others, and not just a 'tad'.

Sony clips the least IIRC, Panasonic and Pioneer are near identical to my eyes.

[Robert Zohn]

Originally Posted by curlyjive

So those modes are for outputting hdr. If using sdr bt2020, does the 820 still map to 350 nits with the optimizer on as Kris had originally stated?

I don't remember Kris saying the UB820 tone maps to 350 Nits when using SDR BT2020.

From what I know the UB820 cannot tone map to 350 Nits. Only the UB9000 has 350 Nits and 500 Nits tone mapping available.

Kris posts here frequently so let's see what he says.

[sapiendut]

The 820 maps to 500 nits for projector setting.

[HeavyHitter]

Originally Posted by Robert Zohn

I don't remember Kris saying the UB820 tone maps to 350 Nits when using SDR BT2020.

From what I know the UB820 cannot tone map to 350 Nits. Only the UB9000 has 350 Nits and 500 Nits tone mapping available.

Kris posts here frequently so let's see what he says.

Kris made note of it in this conversation.

https://forum.blu-ray.com/showpost.p...&postcount=397

[Robert Zohn]

Let's wait for Kris to explain.

[sapiendut]

Robert, the 500 nits on 820 and 350/500 on the 9000 info came from Panasonic/JVC training earlier this year.

[Robert Zohn]

I worked with Panasonic HQ in the development and Beta testing of the UB820 and UB9000.

[curlyjive]

Keep in mind I'm referencing sdr bt2020 not hdr. Kris had posted that the default position on the dynamic range control was 350 nits and all the way up to +12 was 100 nits.

[FilmFreakosaurus]

Then somebody must get both Dolby and Panasonic in a room and hash out why their implementation of Dolby Vision is clipping and then correct the issue.

[Robert Zohn]

I still can't understand why a UB820 and or UB9000 owner would bypass the well respected HDR Optomizer and use Dolby Vision HDR?

Dolby Vision HDR content played in HDR10 with Panasonic piority HDR Optomizer delivers a better pictures that Dolby Vision HDR can even if the cliping was fixed.

[JohnAV]

Originally Posted by Robert Zohn

I still can't understand why a UB820 and or UB9000 owner would bypass the well respected HDR Optomizer and use Dolby Vision HDR?

Dolby Vision HDR content played in HDR10 with Panasonic piority HDR Optomizer delivers a better pictures that Dolby Vision HDR can even if the cliping was fixed.

Bah that is a cop out on Panasonic's part!

If others can get it right why is your hightly touted product have DV issues.

[FilmFreakosaurus]

Originally Posted by Robert Zohn

I still can't understand why a UB820 and or UB9000 owner would bypass the well respected HDR Optomizer and use Dolby Vision HDR?

Dolby Vision HDR content played in HDR10 with Panasonic piority HDR Optomizer delivers a better pictures that Dolby Vision HDR can even if the cliping was fixed.

That's still no excuse. You have a feature? Make sure it works.

[Robert Zohn]

Thanks and I understand and apreciate yoru position. All I am doing in my post above and this one is to bring to the attention of all UB820 and UB9000 owners the best way to operate these advanced technology BD players.

The answer I provided is helpful to all UB820 and UB9000 owners and that's what user forums are all about, solutions to delievr the best possible performance from our love for premium a/v experences.

Two things to consider:

1. It seems to be an issue for Dolby to work out. Clipping highlights when playing Dolby Vision HDR is a common problem with BD players.

2. Sorry to repea, but why would anyone want to use Dolby Vision HDR when the Panasonic's superior HDR Optomizer would deliver a better picture.

Try answering item #2 above without bring into the reply with DV should work if it's also included in the BD player.

Panasonic and Sony both know about the Dolby Vision HDR clipping and they are working with Dolby for a fix.