AVS Forum banner

5541 - 5560 of 6023 Posts

·
Registered
Joined
·
2,769 Posts
Hey folks...

TL;DR - HDFury Linker vs UB820 upgrade?

Have had an RS400 for about a year now, professionally calibrated by Gregg Loewen. He set up a separate calibrated HDR custom picture mode with custom HDR gamma/EOTF and BT.2020 color space. So I assume my tone mapping is about as good as it’s gonna get.

It looks absolutely wonderful with SDR and HDR content, BUT the Gamma D gremlin annoys the living [email protected] out of me as does the long HDMI sync times when switching signal formats.

I have an Apple TV 4K which I use for all streaming, and the above noted annoyance is such that I have the ATV4K set to output 4K/60 SDR all the time. I feel the only thing I’m losing with streaming content is the wider color gamut (ATV seems to output 8bit REC709 color when set this way). But a small sacrifice for avoiding gamma D and 10 second black outs when the signal changes.

I also have a Sony X800 4K BDP. I think it has terrible HDR>SDR tone mapping, so I let 4K HDR discs play to my calibrated JVC. But then gamma D makes me batty. And when I start a movie I have to pause because the movie starts before the HDMI resyncs and I hear sound with no video.

I came across a deal on a HDFury Linker for $100 and was going to grab that to strip the HDR flag (solving Gamma D issue) but then I wondered if instead i should invest that into upgrading the Sony X800 to the Panny UB820. Then I could let the UB820 output SDR+BT.2020 with 4K HDR discs. No more gamma D, but I’m trading the custom calibrated tone mapping of an elite calibrator for the processing in the Panny UB820.

Since I’ve got the ATV4K working without issue for all my streaming needs, my primary concern is reducing annoyances with 4K HDR disc playback.

If it was a perfect world, I would output the same signal format to my PJ all the time so I never have to worry about switching picture mode or gamma or waiting for black screen to resync but I can’t afford a Lumagen. But maybe I could get close with the Linker’s capabilities or the UB820 processing?

Curious to get some feedback from fellow owners who’ve been down this road on the pros/cons of the two approaches? Seems like either way Gamma D is resolved, but is there anything I’m not considering which could tip the scales either way?
I have the RS400, used with the Linker to allow DI use and prevent auto-switching to Gamma D. I have an older Philips BDP-7501, which outputs HDR, and have custom gamma curves that I've tweaked for my room. They're decent, but probably nowhere near what Gregg probably created for you.

But the 15-20 second sync problem remains, and I don't think either of your solutions would have much difference. If I put in a Blu-ray, there are various changes that require a new HDMI handshake, and there doesn't seem any way to avoid that. I tried to set my AVR to only output 4k/24Hz, but that didn't work. The menu systems are usually 60Hz, and it just passes that through, so that really doesn't help.

I would assume the same would be the case with the UB-820, so it wouldn't have any benefit as far as fewer or quicker handshakes. Whether or not you would prefer SDR-2020 from the UB-820, compared with HDR and your Custom Curves, you would just have to try and see.

Personally, if your curves are working very well, and you're happy with them with a variety of UHD content, then I would just spend the $100 for the Linker, and save perhaps for a next generation projector down the road.

My $.02 anyway.
 

·
Registered
Joined
·
9,629 Posts
I would assume the same would be the case with the UB-820, so it wouldn't have any benefit as far as fewer or quicker handshakes. Whether or not you would prefer SDR-2020 from the UB-820, compared with HDR and your Custom Curves, you would just have to try and see.
The UB820 reads the HDR metadata while the eshift JVCs don’t, so potentially the UB820 can do a better job with some source materials.
 

·
Registered
Joined
·
2,769 Posts
The UB820 reads the HDR metadata while the eshift JVCs don’t, so potentially the UB820 can do a better job with some source materials.
This is of course, true, and addresses the at least theoretical superiority of the UB-820 when used with JVC's prior to the newest generation, in terms of HDR Tone-Mapping.

What I was trying to say, though, is that if one has let's say 2 different custom curves, created by a knowledgeable and capable professional, to address 2 broad categories of HDR mastering, then the real-world difference might not be as great as expected. IIRC, I've read reports by owners who have preferred their custom curves over the UB-820's Tone-Mapping.

In my case, I am not a professional, nor have I really taken the time to fully max out my custom curves, so am strongly considering moving to the UB-820 (even if I don't upgrade my Projector), for exactly the reason you indicate. But as I said, if one had a pair of truly optimal curves, the benefit might not be as evident. That might be the case for the OP, based on Gregg's calibration.

But my main point for the OP, who will be using the RS400, and correct me if I'm overlooking something Dominic, is that I don't think the UB-820, or HDFury Linker, would improve anything in terms of the frequency of the long HDMI handshakes. As an RS400 owner like the OP, this is really tiresome and tedious, and I've not been able to figure out how to improve on this (other than adding a pricey Lumagen product!).
 

·
Registered
Joined
·
7,041 Posts
If I’d known 2 years ago of this gamma D and latency issue I would have waited before buying my RS400 for a PJ that did not have the issues. Truly a poor release by JVC, shame on them.
What recourse do us consumers have now? Sorry for sounding like a grumpy old man, well no I’m not.

I watch HDR from variety of sources, Xbox 1x UHDBR’s & Netflix, Apple 4K tv.

I should contact JVC and file a formal owners consumer complaint, if nothing else to have it documented.


Sent from my iPhone using Tapatalk
 

·
Registered
Joined
·
9,629 Posts
This is of course, true, and addresses the at least theoretical superiority of the UB-820 when used with JVC's prior to the newest generation, in terms of HDR Tone-Mapping.

What I was trying to say, though, is that if one has let's say 2 different custom curves, created by a knowledgeable and capable professional, to address 2 broad categories of HDR mastering, then the real-world difference might not be as great as expected. IIRC, I've read reports by owners who have preferred their custom curves over the UB-820's Tone-Mapping.

In my case, I am not a professional, nor have I really taken the time to fully max out my custom curves, so am strongly considering moving to the UB-820 (even if I don't upgrade my Projector), for exactly the reason you indicate. But as I said, if one had a pair of truly optimal curves, the benefit might not be as evident. That might be the case for the OP, based on Gregg's calibration.
If I read the OP's post literally, he might have only a single curve, hence my comment regarding UB820's "dynamic tone mapping".

But my main point for the OP, who will be using the RS400, and correct me if I'm overlooking something Dominic, is that I don't think the UB-820, or HDFury Linker, would improve anything in terms of the frequency of the long HDMI handshakes. As an RS400 owner like the OP, this is really tiresome and tedious, and I've not been able to figure out how to improve on this (other than adding a pricey Lumagen product!).
The UB820 has the option of converting everything to HDR, which would reduce the frequency of the handshakes.
 

·
Registered
Joined
·
2,769 Posts
The UB820 has the option of converting everything to HDR, which would reduce the frequency of the handshakes.
Interesting. Two follow-ups:

Is this desirable? It seems like it could be problematic trying to 'make' HDR out of SDR content

Does this include its own Menu system, and does it include stipulating 24 Hz vs 60 Hz? My impression is that many of the handshakes originate in many players' menu system being at 60 Hz, while the content is 24 Hz (not to mention that often 'coming attractions' seem to be either one or the other, which generates other handshakes, given that on some discs, you can't easily bypass them).
 

·
Registered
Joined
·
30,102 Posts
Thanks for the great feedback so far.

To clarify I only have one custom HDR gamma preset that’s Gregg set up. It seems to look great with any HDR content I’ve played but I have no idea if the UB820’s more dynamic tone mapping would do a better job (eg with 1000nit vs 4000nit mastered content).

One thing I didn’t mention is that I do get annoyed by the extra fan noise from the PJ when running in high lamp mode for HDR. I find it plenty bright for SDR running low lamp with the iris stopped down a bit (started at -6 but have opened it up to -4 as I’ve put about 800 hours on the bulb). This makes me wonder if the UB820 outputting SDR.2020 would be preferable since I wouldn’t have to use high lamp mode... but would the HDR content then look too dull?
 

·
Registered
Joined
·
2,769 Posts
This makes me wonder if the UB820 outputting SDR.2020 would be preferable since I wouldn’t have to use high lamp mode... but would the HDR content then look too dull?
Here is how I understand this area:

This is an individual and subjective issue, depending on one's screen size and gain, throw distance, how black the room is, etc., as well as personal preferences. I've read of some who are happy with low lamp for HDR content using SDR-2020 while others find the need or prefer the added brightness obtained with High Lamp.

If you have a smaller, high-gain screen, pitch black room, low lamp may be sufficient.
If you have a large, lower-gain screen, a less black room, high lamp may be preferable.

Keep in mind, that even with "SDR-2020" this is simply Tone-mapping of the original HDR into a range that your projector is able to display, being done in the player, rather than in the projector. This is *not* the same as 'regular' SDR from conventional Blu-rays. Many use the term "SDR-Lite" to reflect that it really is something not quite full bore HDR, since our projectors can't handle this, but also not simply 'regular' SDR.

So if you find low lamp with your custom curve satisfactory, it will remain so with SDR-2020 from the UB-820.
Conversely, if you find you need high lamp with your custom curve to get the highlight pop you want, you'll still need it with the UB-820.
 

·
Registered
Joined
·
1,122 Posts
Hey folks...

TL;DR - HDFury Linker vs UB820 upgrade?

Have had an RS400 for about a year now, professionally calibrated by Gregg Loewen. He set up a separate calibrated HDR custom picture mode with custom HDR gamma/EOTF and BT.2020 color space. So I assume my tone mapping is about as good as it’s gonna get.

It looks absolutely wonderful with SDR and HDR content, BUT the Gamma D gremlin annoys the living [email protected] out of me as does the long HDMI sync times when switching signal formats.

I have an Apple TV 4K which I use for all streaming, and the above noted annoyance is such that I have the ATV4K set to output 4K/60 SDR all the time. I feel the only thing I’m losing with streaming content is the wider color gamut (ATV seems to output 8bit REC709 color when set this way). But a small sacrifice for avoiding gamma D and 10 second black outs when the signal changes.

I also have a Sony X800 4K BDP. I think it has terrible HDR>SDR tone mapping, so I let 4K HDR discs play to my calibrated JVC. But then gamma D makes me batty. And when I start a movie I have to pause because the movie starts before the HDMI resyncs and I hear sound with no video.

I came across a deal on a HDFury Linker for $100 and was going to grab that to strip the HDR flag (solving Gamma D issue) but then I wondered if instead i should invest that into upgrading the Sony X800 to the Panny UB820. Then I could let the UB820 output SDR+BT.2020 with 4K HDR discs. No more gamma D, but I’m trading the custom calibrated tone mapping of an elite calibrator for the processing in the Panny UB820.

Since I’ve got the ATV4K working without issue for all my streaming needs, my primary concern is reducing annoyances with 4K HDR disc playback.

If it was a perfect world, I would output the same signal format to my PJ all the time so I never have to worry about switching picture mode or gamma or waiting for black screen to resync but I can’t afford a Lumagen. But maybe I could get close with the Linker’s capabilities or the UB820 processing?

Curious to get some feedback from fellow owners who’ve been down this road on the pros/cons of the two approaches? Seems like either way Gamma D is resolved, but is there anything I’m not considering which could tip the scales either way?


I think the better option would actually be setting the ATV to output 4K HDR at 60 and use your calibrated HDR curve. The ATV does a good job converting SDR to HDR and will obviously be ready to send HDR when the content has it. If you are using the linker to strip the HDR flag then the JVC should never switch to the dreaded gamma D but will always display all of the HDR when available so you would never miss out on the wider color gamut. Finally, you wouldn’t need to make any changes for UHD disc playback. The only time you would need to make any changes would be for SDR disc playback, SDR gaming and regular old TV. This won’t solve the syncing delays since any frame rate change will trigger it but it won’t be triggered by dynamic range changes. I need to get myself a linker!


Sent from my iPad using Tapatalk
 

·
Registered
Joined
·
2,263 Posts
Curious to get some feedback from fellow owners who’ve been down this road on the pros/cons of the two approaches? Seems like either way Gamma D is resolved, but is there anything I’m not considering which could tip the scales either way?
Holy smokes, its batpig! First let me say I've followed your Denon work for over a decade. In fact, you were probably the reason I joined this forum. Thank you very much for your contributions. I'm glad to have the opportunity to give back, if in only a small way. :D

Short version: Buy the UB820. Calibrated Gamma D is basically a super shiny turd. Your only regret will be wondering why you waited so long (the only caveat being possibly getting the UB9000 if you plan to get a NX5/NX7 projector as apparently there is an UB9000 HDR mode designed to communicate with the NX projectors but that function hasn't been reviewed or tested yet and that specific function doesn't work with the older RSxxx projectors). Also keep in mind, you are still getting the benefits of the color and gamma points calibration, you are not throwing out the entire calibration.

This makes me wonder if the UB820 outputting SDR.2020 would be preferable since I wouldn’t have to use high lamp mode... but would the HDR content then look too dull?
With the UB820 & SDR2020 your projector is already using the full range and isn't leaving any brightness or color "on the table." For example, "100% white" is the exact same thing whether you are in HDR or SDR, HD or 4K. I used to always use high lamp with HDR and now almost always just stay in low lamp mode for everything except 3D.

I cried foul on "HDR" with these projectors a long time ago and grew increasingly frustrated at varying levels of brightness based on title, looking at darkness and everybody else pretending it looked good. On some titles, the projector would make 99% of the movie half brightness just to make once scene brilliantly bright (How do you make a flash twice as bright than the rest of the move? Make the rest of the move half as bright).

The loaded premade Gamma curves (directions in my guide below) made things significantly better but occasionally I'd still hit an unpleasantly dark title. The UB820 normalizes everything and almost completely removes this issue. Basically, the UB820 will make your 4K Blu-ray discs behave exactly like HD Blu-ray discs, just with more color and resolution. You will be very happy, I promise.

I made a JVC 4K QuickStart Guide for newcomers, I suggest you take a look as it will be a good refresher and I talk about loading premade gamma curves, which you'll want if you are streaming HDR content. It needs a bit of updating specifically for the UB820, but all you'll need to do is turn on SDR2020 in the UB820 settings. This change means the projector will not see a "HDR" signal so it will not switch to Gamma D. You will need to set projector to Gamma 2.4 and will still use the BT2020 Color Profile. I set my user modes up for quick switching: User1-HD, User2-4K, User3-3D.

I've heard some people having trouble with HDR content on the ATV as it would resend some signal to the projector frequently retripping the Gamma D switch and this would happen several times during regular playback. The only work around I've heard for this is the HD Fury products. If you are just watching HD you probably haven't noticed this and if you watch HDR on the ATV, you must be one of the lucky ones.

The long sync times are just something you have to live with. It seems very basic, but pressing pause until you see picture is the only way to keep the frustration at bay.

Once you see what a 4K disc looks like on a UB820 in SDR2020 with Gamma 2.4 & BT2020 Color Profile, you'll be blown away and will never ever return to Gamma D. You will seriously think you bought a new projector.
 

·
Registered
Joined
·
30,102 Posts
Calibrated Gamma D is basically a super shiny turd... Once you see what a 4K disc looks like on a UB820 in SDR2020 with Gamma 2.4 & BT2020 Color Profile, you'll be blown away and will never ever return to Gamma D. You will seriously think you bought a new projector.
Thanks for the advice, friend, but I don't think you read my post completely :p

I don't use Gamma D, it's just a fly that I have to swat away constantly when I watch HDR content. I don't need to load custom curves, my PJ has a custom calibrated EOTF set by Gregg Loewen. Occasionally I look at Gamma D just to laugh at how dark and murky it looks then I swap to the custom Gamma and marvel at how much better it looks!

To be clear, my ONLY real issues with HDR are (1) the annoyance of having to grab the remote and push the "Gamma" button every time it falls back to Gamma D and (2) the fan noise in high lamp mode.

So while a UB820 may still be a good choice, it's not because of Gamma D. The only problem with Gamma D is that it keeps rearing its head and I have to switch it back to my custom calibrated HDR Gamma. Both the HDFury (by stripping the HDR flag) and the UB820 (by outputting SDR.2020) would allow me to avoid Gamma D completely, since the PJ would never see an HDR flag.

With the UB820 & SDR2020 your projector is already using the full range and isn't leaving any brightness or color "on the table." For example, "100% white" is the exact same thing whether you are in HDR or SDR, HD or 4K.
Hmm, I'm not following this part. Maybe I'm not understanding...

Let's say I have it calibrated so my SDR picture mode maxes out at 14ftL (low lamp mode, iris stopped down), but my HDR picture mode gets over 20ftL (high lamp, iris wide open). If I have the UB820 tone map the HDR to SDR output, and then watch with my SDR picture settings (but switching REC709 color profile for BT.2020) wouldn't I max out at 14ftL vs. the 20+ that I was getting with my HDR mode? So aren't I "leaving brightness on the table" so to speak?

Basically, for the purposes of this discussion I have two calibrated picture modes (there's also a third "bright room TV" mode Gregg set up but not relevant to this):
- An SDR mode with REC709 color gamut and 2.4 Gamma
- An HDR mode with BT.2020 color gamut and an HDR EOTF custom Gamma

Am I correct in understanding that if I had a UB820 outputting SDR.2020 that I'd basically want to set up a 3rd custom picture mode which sort of mixes the two, combining the calibrated SDR Gamma (2.4) with the BT.2020 color profile?

Basically, the UB820 will make your 4K Blu-ray discs behave exactly like HD Blu-ray discs, just with more color and resolution. You will be very happy, I promise.
Interesting.... I've heard nothing but praise for the UB820!


I've heard some people having trouble with HDR content on the ATV as it would resend some signal to the projector frequently retripping the Gamma D switch and this would happen several times during regular playback. The only work around I've heard for this is the HD Fury products. If you are just watching HD you probably haven't noticed this and if you watch HDR on the ATV, you must be one of the lucky ones.
I have my ATV4K set to output 4K/60p SDR at all times. Then I never have to deal with black-out HDMI resyncs or Gamma D at all. Frankly the ATV4K has really fabulous PQ with everything I've used it for (loads better than my older 1080p Roku) and the only thing I'm missing out on from what I can tell is the wider color gamut on streamed HDR titles. Unfortunately as far as I can tell there's no way to stream from Vudu or Netflix with SDR.2020, I'm assuming it requests the SDR stream with 8-bit REC709 color rather than the HDR stream with BT.2020 from the source.

Anyway, appreciate the awesome feedback from everyone! This is a great discussion and I'm learning a lot. Unfortunately I'm still wavering between the two options! :p
 

·
Registered
Joined
·
9,629 Posts
I don't use Gamma D, it's just a fly that I have to swat away constantly when I watch HDR content. I don't need to load custom curves, my PJ has a custom calibrated EOTF set by Gregg Loewen. Occasionally I look at Gamma D just to laugh at how dark and murky it looks
You can get a better picture with Gamma D by optimizing the gamma controls:

https://www.avsforum.com/forum/24-d...50-x5000-owner-s-thread-176.html#post56987686

Let's say I have it calibrated so my SDR picture mode maxes out at 14ftL (low lamp mode, iris stopped down), but my HDR picture mode gets over 20ftL (high lamp, iris wide open). If I have the UB820 tone map the HDR to SDR output, and then watch with my SDR picture settings (but switching REC709 color profile for BT.2020) wouldn't I max out at 14ftL vs. the 20+ that I was getting with my HDR mode? So aren't I "leaving brightness on the table" so to speak?

Basically, for the purposes of this discussion I have two calibrated picture modes (there's also a third "bright room TV" mode Gregg set up but not relevant to this):
- An SDR mode with REC709 color gamut and 2.4 Gamma
- An HDR mode with BT.2020 color gamut and an HDR EOTF custom Gamma

Am I correct in understanding that if I had a UB820 outputting SDR.2020 that I'd basically want to set up a 3rd custom picture mode which sort of mixes the two, combining the calibrated SDR Gamma (2.4) with the BT.2020 color profile?
There are players that output SDR2020 the way you describe, but in the case of the UB820, “SDR2020” is a misnomer. It is still HDR, but with the ST.2084 EOTF and the tone mapping already done in the player. Thus you would keep all the HDR settings (lamp power, iris, colour profile) in the projector the same as what you have, but replace the custom curve with gamma 2.2 (some prefer 2.4).

Some users claim that the UB820 tone mapping is so good that they don’t need to use High Lamp, but that’s a different story.:)
 

·
Registered
Joined
·
2,263 Posts
Thanks for the advice, friend, but I don't think you read my post completely :p

I don't use Gamma D, it's just a fly that I have to swat away constantly when I watch HDR content. I don't need to load custom curves, my PJ has a custom calibrated EOTF set by Gregg Loewen. Occasionally I look at Gamma D just to laugh at how dark and murky it looks then I swap to the custom Gamma and marvel at how much better it looks!

To be clear, my ONLY real issues with HDR are (1) the annoyance of having to grab the remote and push the "Gamma" button every time it falls back to Gamma D and (2) the fan noise in high lamp mode.

So while a UB820 may still be a good choice, it's not because of Gamma D. The only problem with Gamma D is that it keeps rearing its head and I have to switch it back to my custom calibrated HDR Gamma. Both the HDFury (by stripping the HDR flag) and the UB820 (by outputting SDR.2020) would allow me to avoid Gamma D completely, since the PJ would never see an HDR flag.
Okay yeah, I missed you already had a custom gamma curve. Well that is great. If you are completely pleased with the way HDR looks on your projector you might be able to get away with just buying a HD Fury device. Personally, even with a custom curve I would occasionally encounter a "dark disc" that was unpleasantly dark and not equivalent to the much brighter HD disc. (Star Trek Beyond (dark) vs the other Treks or Dawn/Apes (dark) vs Rise/Apes for example).

I might suggest picking up a UB820 locally just to try and see for yourself if it makes a difference (it will).

Hmm, I'm not following this part. Maybe I'm not understanding...

Let's say I have it calibrated so my SDR picture mode maxes out at 14ftL (low lamp mode, iris stopped down), but my HDR picture mode gets over 20ftL (high lamp, iris wide open). If I have the UB820 tone map the HDR to SDR output, and then watch with my SDR picture settings (but switching REC709 color profile for BT.2020) wouldn't I max out at 14ftL vs. the 20+ that I was getting with my HDR mode? So aren't I "leaving brightness on the table" so to speak?

Basically, for the purposes of this discussion I have two calibrated picture modes (there's also a third "bright room TV" mode Gregg set up but not relevant to this):
- An SDR mode with REC709 color gamut and 2.4 Gamma
- An HDR mode with BT.2020 color gamut and an HDR EOTF custom Gamma

Am I correct in understanding that if I had a UB820 outputting SDR.2020 that I'd basically want to set up a 3rd custom picture mode which sort of mixes the two, combining the calibrated SDR Gamma (2.4) with the BT.2020 color profile?
Yes of course Low Lamp clamped Iris will be dimmer than High Lamp Iris open. What I was trying to convey is that the projector doesn't have "another gear" where HDR content comes through brighter or something. There is a bit of a misnomer where people think with the same settings that the HDR stuff is brighter, it actually is usually the opposite. Any brightness increases are due to increasing brightness settings (iris, lamp mode, etc) in the projector. Some people get stuck on the content having to be "HDR" or the are somehow missing something, which isn't true. The UB820 is still interpreting the HDR data off the disc and sending the a "full range" signal to the projector.

Am I correct in understanding that if I had a UB820 outputting SDR.2020 that I'd basically want to set up a 3rd custom picture mode which sort of mixes the two, combining the calibrated SDR Gamma (2.4) with the BT.2020 color profile?
In your case yes, I'd probably run a blended version, basically your HDR user mode but the only difference would be swapping out Custom Gamma for Gamma 2.4.


in the case of the UB820, “SDR2020” is a misnomer. It is still HDR, but with the ST.2084 EOTF and the tone mapping already done in the player. Thus you would keep all the HDR settings (lamp power, iris, colour profile) in the projector the same as what you have, but replace the custom curve with gamma 2.2 (some prefer 2.4).
Yes, this. Excellent.

Some users claim that the UB820 tone mapping is so good that they don’t need to use High Lamp, but that’s a different story.:)
High Lamp always looks better (of course). I just get tired of the fan noise and perceived increased lamp degradation.
 

·
Registered
Joined
·
222 Posts
Recently viewed a video on the new 4K JVC’s and there new high and low level colour profiles implemented through a new firmware, is there any way of downloading those profiles to my rs400 or would there be any improvement in uploading them?



Sent from my iPhone using Tapatalk
 

·
Registered
Jvc rs-2000, panamorph C-DCR, Stewart 2.35 138” G4, Yamaha rx-a3080, NHT C series 7.1.2, SVS sb-2000
Joined
·
10 Posts
I have loved my RS400 ever since I purchased it years ago! I held out as long as possible with my oppo, but made the plunge and got a Panasonic 820 for the hdr features. I would like some recommendations regarding settings on this setup. Tried searching the forums but that feature never works well for me on these forums.

I am going to use the sdr/2020 output, but am unsure how the hdr enhancement feature plays into this with sdr/2020 on.

I have also seen people reference setting the gamma to 2.4, but I have trouble finding the exact spot on the jvc to change this in the gamma menus.

Thanks!
 

·
Registered
Joined
·
9,629 Posts
I have also seen people reference setting the gamma to 2.4, but I have trouble finding the exact spot on the jvc to change this in the gamma menus.
You cannot directly select gamma 2.4. Choose a custom gamma and select 2.4 as the Correction Value.
 

·
Registered
Joined
·
2,263 Posts
Panasonic UB820, JVC & SDR2020

The Panasonic UB820 is the answer for physical 4K media. With the built-in SDR2020 Tone Mapping, 4K discs behave exactly like HD discs and you never have to deal with Gamma D or any external devices like an HD Fury. The UB820 will make you think you bought a new projector. Configured with the settings below, your projector will not see a ‘HDR’ signal so it will not switch to Gamma D. The UB820 is still interpreting the HDR data off the disc and sending a ‘full range’ signal to the projector so you are not leaving any color or brightness 'on the table'. You get beautiful high resolution and wide color gamut images without the hassle. :cool:

The UB820 is worth every single penny and your only regret will be waiting this long to get it.

I also made a JVC 4K QuickStart Guide that has some tips you might find useful.

Panasonic UB820 Optimal Settings for JVC RSxxx Projectors (SDR2020):

On the UB820:
Settings>HDMI>Advanced>HDR/Color Gamut Output>SDR/BT.2020
Settings>HDMI>Advanced>HDR/Color Gamut Output>HDR TV Type>Basic Luminance LCD and Projector
Settings>Audio>Settings for High Clarity Sound>Front Panel Display>Off (preference)

On the UB820 During 4K Disc Playback:
Options (remote button)>Video Settings>Optimum HDR Adjustment>HDR Optimizer>On (preference)
Options (remote button)>Video Settings>Optimum HDR Adjustment>Dynamic Range Conversion Adjustment>+4 to +8 (preference)

Regarding HDR Optimizer, you lose some brightness but gain detail in explosions and similar. I started with this off but now have it on. Dynamic Range Conversion Adjustment will depend a lot on your screen size, bigger screens will want more. I have left the other settings at defaults (so far).

On the JVC Projector:
Menu>Picture Adjust>Color Profile>BT.2020
Menu>Picture Adjust>Gamma>Gamma>Custom 1 or 2 or 3
Menu>Picture Adjust>Gamma>Correction Value>2.4

Regarding other settings like Iris and Lamp Mode, that is your preference. I chose Iris 0 and usually Low Lamp but High Lamp looks nicer. I set my user modes up for quick switching (press the User Mode before adjusting settings): User1-HD, User2-4K, User3-3D. More about that in my JVC 4K QuickStart Guide.
 

·
Registered
Jvc rs-2000, panamorph C-DCR, Stewart 2.35 138” G4, Yamaha rx-a3080, NHT C series 7.1.2, SVS sb-2000
Joined
·
10 Posts
Wish I would have bought the 820 sooner! Amazing. Thanks for the help!
 

·
Registered
Joined
·
30,102 Posts
Regarding HDR Optimizer, that is your preference, I left it off. Same with the other settings, I've left them at defaults (so far).
So the HDR Optimizer can be separately enabled even when outputting SDR from the UB820? So I assume with it off the HDR>SDR conversion is a static EOTF, whereas with Optmizer enabled the EOTF become more dynamic based on the HDR metadata on the disc?
 
5541 - 5560 of 6023 Posts
Top