Official Panasonic DP-UB820/824 Owner's Thread (No Price Talk) - Page 193 - AVS Forum | Home Theater Discussions And Reviews
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post #5761 of 6013 Old 09-14-2019, 06:37 AM
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Originally Posted by evanft View Post
Yes, but this corresponds to 350 nits wine using the SDR output selection. Per Kris Deering, lowering th value raises this number, so to tone map to 575 you’d have to lower the slider by about 11 in my case.
Where did you see “each level is about 20 nits” stated? It doesn’t sound right to me.
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post #5762 of 6013 Old 09-14-2019, 06:38 AM
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Originally Posted by Dominic Chan View Post
Where did you see “each level is about 20 nits” stated? It doesn’t sound right to me.
It’s a ballpark based on the fact that +12 corresponds to 100. So each level is about 20, assuming it’s linear and true in both directions, of course.

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post #5763 of 6013 Old 09-14-2019, 06:46 AM
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Originally Posted by evanft View Post
It’s a ballpark based on the fact that +12 corresponds to 100. So each level is about 20, assuming it’s linear and true in both directions, of course.
Theses settings are definitely not linear; they are more like logarithmic.
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post #5764 of 6013 Old 09-14-2019, 06:58 AM
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Originally Posted by Dominic Chan View Post
Theses settings are definitely not linear; they are more like logarithmic.
Not surprised based on my experience just now with the lowered range setting. Do we have a way to test what each level corresponds to?

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post #5765 of 6013 Old 09-14-2019, 08:26 AM
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Originally Posted by evanft View Post
Not surprised based on my experience just now with the lowered range setting. Do we have a way to test what each level corresponds to?
My projector has 108 nits peak and these are the measured results of the "diffused white" level (50% input) at 3 settings of the Dynamic Range Conversion Adj. The listed multiplier are based on 94.4 nits.

+6: 36 nits, 2.6X
0: 26 nits, 3.6x
-6: 15.8, 6.0x

EDITED to correct previous error. Also see follow-up post.

Last edited by Dominic Chan; 09-15-2019 at 08:45 AM.
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post #5766 of 6013 Old 09-14-2019, 09:13 AM
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Quote:
Originally Posted by Dominic Chan View Post
My projector has 108 nits peak and these are the measured results of the "diffused white" level (50% input) at 3 settings of the Dynamic Range Conversion Adj. The listed multiplier are based on 94.4 nits.

+6: 19.6 nits, 4.8X
0: 26 nits, 3.6x
-6: 38.3, 2.5x
Oh this are brilliant. So the 50% measurement is getting dimmer as the slider moves to the right? How do you use this info to pick the 5x multiplier?

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Last edited by evanft; 09-14-2019 at 09:37 AM.
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post #5767 of 6013 Old 09-14-2019, 09:44 AM
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Quote:
Originally Posted by evanft View Post
Yes, but this corresponds to 350 nits wine using the SDR output selection. Per Kris Deering, lowering th value raises this number, so to tone map to 575 you’d have to lower the slider by about 11 in my case.
This is a response from Kris Deering posted elsewhere....

With 120 nits you are looking at a multiplier of around 500-600. The default is 350 for the slider, so you want to turn it DOWN. Again, middle is 350 and all the way up is 100, so each change in the slider is approximately 20 nits. So go down to roughly 500 (7-8 clicks) and that should be a good starting point.

Remember, tone mapping is always a trade off. When using the slider the brighter the image you make (lower multiplier) the less overall dynamic range you have. The darker the image you select (higher multiplier) the more overall dynamic range you'll have. I think a range between 4 and 6x works best with most material, which is why I recommend people start around 5x. But some people want a brighter image and some people like more contrast, so tailor to your taste. There really isn't a "wrong" selection.


With 120 nits from the projector he suggested starting at 7-8 clicks to the left as a starting point.

Then adjust to taste. Lower for more contrast. Higher for more brightness.

I wish I could get 115 nits. I don't and leave the the slider at its default 350 nit position and then raise it one or two clicks when watching darker movies. I lower it by one or two clicks when watching very bright movies.
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Last edited by claw; 09-14-2019 at 09:55 AM.
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post #5768 of 6013 Old 09-14-2019, 06:26 PM
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Quote:
Originally Posted by evanft View Post
Oh this are brilliant. So the 50% measurement is getting dimmer as the slider moves to the right? How do you use this info to pick the 5x multiplier?
Sorry, the previous results were somehow mixed up. Here are the new measurements which make more sense:

Slider/nits/multiplier

12 44.4 2.1
9 41.8 2.3
6 37.5 2.5
3 32.8 2.9
0 26.8 3.5
-3 20.9 4.5
-6 16.4 5.8
-9 11.8 8.0
-12 8.7 10.9
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post #5769 of 6013 Old 09-14-2019, 11:11 PM
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Can anyone tell me the difference between the the Panasonic DP-UB820 & DP-UB420 besides Dolby Vision support? I can't imagine having DV support is the main reason for the $250 price difference. The housing, and the remote look identical. So what am I missing??

Also, has the DP-UB420 come out yet? I cant find it anywhere on Amazon, and Best Buy has a product page for it, but listed as "Coming Soon".

Any help appreciated. Thanks!
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post #5770 of 6013 Old 09-15-2019, 03:29 AM
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Discrete IR Codes for the HDR Dynamic Range Slider??

One of the advantages of this player is the Dynamic Range Slider used when playing HDR content. As we all know, especially with Projectors, this needs to be tweaked for different content to achieve optimal results, because of inaccurate or absent metadata, etc.

Accessing this adjustment requires several button pushes, with stuff all over the screen, so it's very intrusive if you're watching when you have people over.

Does anybody know, have access to, or a link that contains a discrete IR code for that specific function, such that when you use it, the slider appears at the bottom of the screen, where it can be adjusted, and then removed?

I've automated the keystrokes with Control4, but it still has to call up the other screens to get there. I wanting to program in the proper IR code, if there is one, to go directly to engage that slider.

Anyone?

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post #5771 of 6013 Old 09-15-2019, 04:27 AM
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Quote:
Originally Posted by Rieper View Post
Can anyone tell me the difference between the the Panasonic DP-UB820 & DP-UB420 besides Dolby Vision support? I can't imagine having DV support is the main reason for the $250 price difference. The housing, and the remote look identical. So what am I missing??

Also, has the DP-UB420 come out yet? I cant find it anywhere on Amazon, and Best Buy has a product page for it, but listed as "Coming Soon".

Any help appreciated. Thanks!
The DP-UB420 is not available for sale in the US and I haven't seen any press releases to suggest that when/if it will be. It has been available in Canada much of this year. Much smaller than the DP-UB820 but technically identical, other than lack of DV and no 7.1 analogue audio outputs; same remote but no front panel readout.

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post #5772 of 6013 Old 09-15-2019, 07:04 AM
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Just managed successfully program my 820 player as DVD region free using a very old One For All URC-8206 "Kameleon 6" remote and codes I found by googling around the net. I have not yet found satisfactory Bluray hardware mod.

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post #5773 of 6013 Old 09-15-2019, 07:27 AM
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What’s a DVD?
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post #5774 of 6013 Old 09-15-2019, 07:34 AM
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Originally Posted by xenofin View Post
Just managed successfully program my 820 player as DVD region free using a very old One For All URC-8206 "Kameleon 6" remote and codes I found by googling around the net. I have not yet found satisfactory Bluray hardware mod.
Good work! Care to share any leads?

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post #5775 of 6013 Old 09-15-2019, 10:58 AM
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Quote:
Originally Posted by Dominic Chan View Post
Sorry, the previous results were somehow mixed up. Here are the new measurements which make more sense:

Slider/nits/multiplier

12 44.4 2.1
9 41.8 2.3
6 37.5 2.5
3 32.8 2.9
0 26.8 3.5
-3 20.9 4.5
-6 16.4 5.8
-9 11.8 8.0
-12 8.7 10.9
So what should that multiplier be in an ideal scenario?

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post #5776 of 6013 Old 09-15-2019, 12:05 PM
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Originally Posted by Pip View Post
Good work! Care to share any leads?

Pip
I actually found those codes from avforums.com site. Depending on the IR remote type, programming these codes to buttons changes a bit so check the manual.
I used my remote's Magic Button + Key magic function. First you program these codes, 5 digits, behind OFA buttons; I used number buttons 1,2...,0.

Here are the codes:
00191, 00120, 00065, 00180, 00143, 00155, 00122, 00117, 00129, 00123.
After this you just select Dvd device in OFA and press buttons in programmed order. Player will shut down and restart after which you send code 5198 during start up phase.
And player is Dvd region free. I tested it with R3 dvd. My player's default was R2.

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post #5777 of 6013 Old 09-15-2019, 02:48 PM
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Originally Posted by xenofin View Post
I actually found those codes from avforums.com site. Depending on the IR remote type, programming these codes to buttons changes a bit so check the manual.
I used my remote's Magic Button + Key magic function. First you program these codes, 5 digits, behind OFA buttons; I used number buttons 1,2...,0.

Here are the codes:
00191, 00120, 00065, 00180, 00143, 00155, 00122, 00117, 00129, 00123.
After this you just select Dvd device in OFA and press buttons in programmed order. Player will shut down and restart after which you send code 5198 during start up phase.
And player is Dvd region free. I tested it with R3 dvd. My player's default was R2.
If you try this on a US device, all you get is a "cannot play" message for non-NTSC DVDs.

In addition to that, it doesn't make sense to discuss specific topics on this board if moderators censor information...
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post #5778 of 6013 Old 09-15-2019, 03:42 PM
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I seem to have found another difference between the 820 & 420. Despite my 420 having the current firmware (1.60), it does not show the nits IN & OUT (HDR10 Metadata) as the 9000 & up to date 820 are capable of achieving. This deficiency is basically irrelevant to me, since the relevant data is able to be displayed on my projector's information menu screen.
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Last edited by docrog; 09-16-2019 at 01:15 AM.
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post #5779 of 6013 Old 09-16-2019, 12:50 AM
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Thanks for the relevant info. May I ask how you acquired the 420? Did u import it from Canada or bought off eBay?
I acquired the UB420 as a birthday present from a close friend who lives in Toronto.

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post #5780 of 6013 Old 09-16-2019, 07:16 AM
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Hmm, well I'm in New York city. Might have to make a weekend car trip to Montreal for some poutine and check out the local BB's in the area. Thanks again.
In case you were being serious about driving up to Canada, the Canadian Best Buy website indicates that the UB420 is only available online without any shipping option to the US.

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post #5781 of 6013 Old 09-16-2019, 09:36 AM
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In case you were being serious about driving up to Canada, the Canadian Best Buy website indicates that the UB420 is only available online without any shipping option to the US.
I was being sincere, I love the city of Montreal. Visited at least a dozen times over the years.

And thanks for the heads up! Will call ahead and see if I can order online for instore pickup.
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I was being sincere, I love the city of Montreal. Visited at least a dozen times over the years.

And thanks for the heads up! Will call ahead and see if I can order online for instore pickup.
I lived there from 1973-1976, during the great political upheaval leading up to the Olympics in Montreal. I haven't been back since and, truly, have no interest in returning. I'm glad that you find it to your liking.........
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post #5783 of 6013 Old 09-16-2019, 05:39 PM
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Does any owner of the UB820/9000 make use of the "System Gamma" adjustment? If so, under what circumstances? Thanks!
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post #5786 of 6013 Old 09-21-2019, 01:08 AM
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@claw - when watching Netflix (HDR), how you define the settings below (assuming a JVC proj)

- HDR TV Type: always set to Basic Luniance LCD and Projector?
- Under HDR Optimizer, what do you have for the range adjustment?
- do you change anything else - such as Tone Curve White and Black?

I have ~105 nits on HDR mode (RS 500, Arve curve).

I just want to get some baseline numbers to start playing tomorrow.

Thanks!
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post #5787 of 6013 Old 09-21-2019, 09:29 AM
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@claw - when watching Netflix (HDR), how you define the settings below (assuming a JVC proj)

- HDR TV Type: always set to Basic Luniance LCD and Projector?
- Under HDR Optimizer, what do you have for the range adjustment?
- do you change anything else - such as Tone Curve White and Black?

I have ~105 nits on HDR mode (RS 500, Arve curve).

I just want to get some baseline numbers to start playing tomorrow.

Thanks!
I don't use a fixed setting for either the Dynamic Range Adj. slider (HDR) or the Dynamic Range Conversion Adj. slider (SDR/BT2020). I adjust them based on the content. I leave the sliders at default for most content, raise the sliders a couple of clicks for darker content, and lower a click for extremely bright content. There is no right or wrong setting value. Up to you whether you prefer more brightness or more shadow detail contrast.

I don't adjust any other settings other than HDR TV Type set to Projector.

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post #5788 of 6013 Old 09-21-2019, 11:01 AM
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I don't use a fixed setting for either the Dynamic Range Adj. slider (HDR) or the Dynamic Range Conversion Adj. slider (SDR/BT2020). I adjust them based on the content. I leave the sliders at default for most content, raise the sliders a couple of clicks for darker content, and lower a click for extremely bright content. There is no right or wrong setting value. Up to you whether you prefer more brightness or more shadow detail contrast.

I don't adjust any other settings other than HDR TV Type set to Projector.
Thanks Claw!
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post #5789 of 6013 Old 09-21-2019, 11:03 AM
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Hi guys this is not a specific 820 question but being that the 820 does have special video features that other players don’t, does anyone with an AVR run their 820 directly to their TV and then run the audio out to their receiver? What are the pros and cons to doing this? I was wondering if the video signal would be better and somehow improved directly connected to tv?
My AVR is a Denon X4500H which can pass any signal. But I’m wondering if the tone mapping is affected when passing through the AVR when connected through the receiver also?

Sony 55 A9F
Panasonic DP-UB820
Sony UBP-X700
Samsung HW-K950 Dolby Atmos sound bar
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post #5790 of 6013 Old 09-21-2019, 11:49 AM
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Quote:
Originally Posted by bobbino421 View Post
Hi guys this is not a specific 820 question but being that the 820 does have special video features that other players don’t, does anyone with an AVR run their 820 directly to their TV and then run the audio out to their receiver? What are the pros and cons to doing this? I was wondering if the video signal would be better and somehow improved directly connected to tv?
My AVR is a Denon X4500H which can pass any signal. But I’m wondering if the tone mapping is affected when passing through the AVR when connected through the receiver also?
For convenience, routing thru the AVR is my preference. I have the Denon 4300, and the pass thru options eliminate any impact on the video signal, such as affects on tone mapping you reference.

If the AVR did not offer complete pass thru, direct connections would solve the problem, but for a limited number of devices.

JVC DLA-X990 (RS640) - 128" 2.35 1.3 Gain Screen - Panasonic UB820 - ROKU Ultra - PS4 - XBone
7.1.4 Atmos - Denon X4300H + Denon 3806(LCR) - JBL Control 5 - BIC Sub - Dayton
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