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Dark level = 5 is what is needed for gamma D, but that raises your black floor and kills your on/off contrast. Fade to black has significantly raised black level with that setting, especially as the DI is disabled with Gamma D. Lowering it to 2 (possibly 3 if you're lucky) doesn't raise the black floor, but crushes black and you lose a significant amount of detail in the low end.

That's the main reason why Gamma D isn't usable and why we need custom curves (or why SDR BT2020 was used before we got custom curves).
Since there's too many uncertain factors in my setup, I'm gonna go ahead and do a proper calibration myself using the JVC autocal software. I'm picking up a Spyder5 Express tomorrow. Then I'll upload the Manni01 custom curve.

I hope the calibration process is not too involved. Will you guys here help me in case I get stuck? :)
 

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JVC Projector Calibration Software V7 & Spyder 5 DIY for RS400/500/600

This step-by-step guide was put together from my calibration experience along with a handful of posts from this calibration thread and various other places. It is not as complicated as it seems, actually it is absurdly easy. This calibration thread has a lot of in it but there really isn't a single post quick start guide to follow. This is that guide. Props to Manni, who as usual, provided much of the data necessary to create this guide.


I read post 9, post 10 and this post. I also read this JVC guide.

I have a Spyder 5 and used JVC Calibration Software V7.

You only need to calibrate the picture modes with settings you actually use. I calibrated (these are the modes I use):

1) Cinema, IRIS -6, CMD OFF, Normal Gamma, Low Lamp (this is 100% of my non 3D & HDR content)
2) Cinema, IRIS 0, CMD OFF, Normal Gamma, High Lamp
3) HDR BT2020, IRIS 0, CMD OFF, Normal Gamma, Low Lamp
4) HDR BT2020, IRIS 0, CMD OFF, Normal Gamma, High Lamp

I also loaded the REC-709 color profile Manni posted (Rec-709NF at the bottom of this post). I'm told it is better and more 'accurate' than Cinema. I found it to be extremely similar to Cinema with colors being slightly less saturated. I've been very happy with Cinema, now I have both. I imported this REC-709NF profile using the same "JVC import procedure" as the BT2020 profile from the JVC HDR settings page. This is the same procedure to import Manni's premade custom gamma curves, too.

FYI: After loading the Filter color profile (e.g. Rec-709F), the projector needs to be turned off and turned on again for it to take affect and be calibrated. Apparently, a No Filter color profile (e.g. Rec-709NF) can be calibrated right away without power cycle.

I ran into a snag on my third calibration. It was taking FOREVER and when I tried to cancel, the software locked up. The projector went black and I had to kill the app and turn the projector off and back on again. Therefor, I recommend exiting the app and opening it again after each calibration.

Each Gamma + Color calibration only takes 10-15 minutes, so this whole thing took me less than one hour. Let the projector fully warm up for an hour or so before beginning this process.

Here is the Calibration Software V7 & Spyder 5 DIY:

1) Buy the Spyder 5 (Hardware is identical for all versions so Express is fine). A camera tripod would be helpful, too.

2) Install Spyder 5 software and JVC Calibration Software V7 (I used a Windows 10 laptop). Shut off any power savings, screensaver, screen-off or sleep modes in computer settings.

3) Physical setup: The Spyder will need to be close to the screen in the middle, so set your gear accordingly. I set the Spyder on a camera tripod (it has a screw mount) in the exact center of the screen (height and width) facing the projector. The software process will show an illustration to help you adjust the Spyder to a proper distance from the projector, mine was about 4 feet from the screen. The Spyder is then USB connected to a laptop on the side facing away from center. The projector just needs to be on any active HDMI signal to allow the calibration process to start. The laptop display does not need to be connected to the projector. The room was pitch black. I dimmed my laptop screen to eliminate any room glow.

4) Connect your projector to the same network as your laptop and check the projector IP address in the projector settings.

5) Use your JVC remote to set your projector to the first mode you'd like to calibrate. You can see what I chose above. Be certain, no matter what, to be using Gamma Normal.

6) Open JVC Calibration Software V7. Click on the gear for settings. Enter the IP address of the projector and click check. Verify Gamma + Color is checked and Gamma Step is Normal. Enter your screen size and viewing distance. Take note of the backup file path. Enter the Serial number of your projector and click OK.

7) Click on the 'Calibration' button on the left, and walk through the process. On the picture mode settings screen you won't have to do anything because you already did it before opening the software by setting the projector to the mode you'd like to calibrate in step 5, but verify anyway.

8) After it is all done, feel free to screenshot the different graphs then click Save. IMMEDIATELY go to the file path folder (Documents by default) and save that "Init" file to a few different places. That is the factory color/gamma settings the projector shipped with and is the ONLY way to restore it. You'll also see each calibration you do gets saved there too, but only one Init file ever and that Init file is only created AFTER the first calibration is done.

9) Close JVC Calibration Software V7. Set the picture mode/lamp mode/etc for your next calibration with the projector remote. Remember: Always Gamma Normal.

10) Repeat step 7 & 9 until you've calibrated all the viewing modes/settings you typically use.

That's it!

Even the quick DIY seems long...lol. But these instructions are precise and idiot proof. :cool:

After calibration, feel free to check my post about custom gamma curves; step 3 is what your looking for there. Alternately, you can load Manni's premade custom gamma curves using Import/Export from the Projector Calibration Software using the same JVC import procedure but selecting 'gamma' from the pull-down menu on the import/export screen.
Thanks for this!

I'm doing the calibration tomorrow. Regarding the color profiles (BT2020 and Rec709), am I supposed to upload those first, before I start the calibration?
 

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Thanks for this!

I'm doing the calibration tomorrow. Regarding the color profiles (BT2020 and Rec709), am I supposed to upload those first, before I start the calibration?
I didn't, but I'd suggest you do. That way you don't have to interrupt the calibration flow in order to upload them.
 
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Manni, as I mentioned in the other thread, I've got a question about which curves to use.


For some reason, I can't get the import/export button to work in autocal. I've downloaded your 4 curves, but I can't get the function to work in the autocal program. (I can get everything else to work, although restoring my INIT file took hours upon hours, and still only finished 55%.)

If I can get it to work, which three should I download since I only have three custom gamma settings on the 620?
 

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What size screen? What gain? Even better, have you measured your peak light output?

You should be able to get by with a single curve. And if you find a title is still mastered too dark for your case, convert it to SDR.
 

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I didn't, but I'd suggest you do. That way you don't have to interrupt the calibration flow in order to upload them.
Ok, got it.

My plan is to calibration color+gamma for my two content/picture modes: HD content (Rec709) (User1) and 4k (BT2020) (User2). I'm assuming this will create calibrated color and gamma curves for each mode.

So, just to have it clear in my mind: the 4k/BT2020 calibration/picture mode is for 4k SDR content, correct?

And later, when I upload the additional Manni custom curve specific for HDR, I will do that into a separate custom slot inside the HDR picture mode (User2)?
 

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Ok, got it.

My plan is to calibration color+gamma for my two content/picture modes: HD content (Rec709) (User1) and 4k (BT2020) (User2). I'm assuming this will create calibrated color and gamma curves for each mode.

So, just to have it clear in my mind: the 4k/BT2020 calibration/picture mode is for 4k SDR content, correct?

And later, when I upload the additional Manni custom curve specific for HDR, I will do that into a separate custom slot inside the HDR picture mode (User2)?
Well once I did a color+gamma calibration for my SDR and 4K HDR picture profiles, I then performed a color only calibration for each of the color profiles I uploaded to the PJ

Ok, got it.

So, just to have it clear in my mind: the 4k/BT2020 calibration/picture mode is for 4k SDR content, correct?
So are you planning on using a linker or intergral to strip the HDR flag so that you maintain SDR/BT2020?
 

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Well once I did a color+gamma calibration for my SDR and 4K HDR picture profiles, I then performed a color only calibration for each of the color profiles I uploaded to the PJ


So are you planning on using a linker or intergral to strip the HDR flag so that you maintain SDR/BT2020?
No, I just meant that User2 mode will be dedicated to BT2020 color profile and gamma, and within that mode I can switch on and off Manni-HDR gamma (living in one of the Custom slots).

So, if I would want to watch 4k without HDR (say through a streaming service) I would keep the normal gamma on, and when I watch HDR I switch to the custom slot.

Am I on the right track?
 

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No, I just meant that User2 mode will be dedicated to BT2020 color profile and gamma, and within that mode I can switch on and off Manni-HDR gamma (living in one of the Custom slots).

So, if I would want to watch 4k without HDR (say through a streaming service) I would keep the normal gamma on, and when I watch HDR I switch to the custom slot.
I don't think there are any of those, it's pretty much an all or nothing deal, you either have a source with HDR+Rec.2020 or SDR+Rec.709, I've not seen any SDR+Rec.2020 sources.

Unless you know you've got a SDR+Rec.2020 source, I think all you really need is an SDR and an HDR calibration, and you pick based on the source which of those is correct.

Which reminds me I really need to go through and clean up my user memories again.
 

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I don't think there are any of those, it's pretty much an all or nothing deal, you either have a source with HDR+Rec.2020 or SDR+Rec.709, I've not seen any SDR+Rec.2020 sources.

Unless you know you've got a SDR+Rec.2020 source, I think all you really need is an SDR and an HDR calibration, and you pick based on the source which of those is correct.

Which reminds me I really need to go through and clean up my user memories again.
All right, thanks!

One thing still bothers me though (= can't grasp it yet):

As I understand it, after my initial calibration I will end up with a calibrated color profile and a calibrated gamma curve for BT2020 (I will upload the BT2020 before calibration).

But what is this calibrated gamma curve used for? It seems wasted, since I will replace it with the custom gamma curve from Manni...

My initial thought was that this curve was used for SDR, hence my previous question...
 

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All right, thanks!

One thing still bothers me though (= can't grasp it yet):

As I understand it, after my initial calibration I will end up with a calibrated color profile and a calibrated gamma curve for BT2020 (I will upload the BT2020 before calibration).

But what is this calibrated gamma curve used for? It seems wasted, since I will replace it with the custom gamma curve from Manni...

My initial thought was that this curve was used for SDR, hence my previous question...
I could be mistaken, but I thought I read somewhere that you have to use a preset to perform a color+gamma calibration using the Autocal software. After that you'd use another calibration software to create custom gamma curves and or color profiles. I've read so much stuff on this topic I could be wrong:eek:
 

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But what is this calibrated gamma curve used for? It seems wasted, since I will replace it with the custom gamma curve from Manni...
The short answer is, everything. There is really one baseline gamma curve in these projectors, and all of the others (Custom 1-3, IMPORT, 2084, etc) are based off that. The custom curves are essentially a delta from the standard curve which is assumed to be "perfect". Any errors in the standard curve are propagated to all the other curves, which is why it's so important to get that baseline gamma correct.

The only way around that is to do a 12 point calibration by hand with a meter/software, which would effectively take any baseline errors into account and fix them as you go, but that would only fix that one custom gamma, not all of them.
 

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The short answer is, everything. There is really one baseline gamma curve in these projectors, and all of the others (Custom 1-3, IMPORT, 2084, etc) are based off that. The custom curves are essentially a delta from the standard curve which is assumed to be "perfect". Any errors in the standard curve are propagated to all the other curves, which is why it's so important to get that baseline gamma correct.

The only way around that is to do a 12 point calibration by hand with a meter/software, which would effectively take any baseline errors into account and fix them as you go, but that would only fix that one custom gamma, not all of them.
Ah! Now I get it, much appreciated!
 

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I'm about to calibrate for 4k/HDR and HD with Autocal. See my initial pre-calibration settings below.

I'm all sorted out except for Lens aperture and Lamp power: how do I know which level to set these? All I know is that the JVC gives me enough light for HDR and a bit too much light for HD (I've got 80+ FT = appr. 230 nits at my throw and zoom).


4K/HDR
Color profile: BT2020
Color temp: 6500K
Gamma: Normal
Clear motion drive: Off
Lens aperture: ?
Lamp power: ?

HD
Color profile: Rec709 No Filter (Mannis curve)
Color temp: 6500K
Gamma: Normal
Clear motion drive: Off
Lens aperture: ?
Lamp power: ?

And as a separate question: Taking the above into account, which of Mannis custom gamma should I use for HDR after the calibration? I'm thinking of this one.
 

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I'm about to calibrate for 4k/HDR and HD with Autocal. See my initial pre-calibration settings below.

I'm all sorted out except for Lens aperture and Lamp power: how do I know which level to set these? All I know is that the JVC gives me enough light for HDR and a bit too much light for HD (I've got 80+ FT = appr. 230 nits at my throw and zoom).


4K/HDR
Color profile: BT2020
Color temp: 6500K
Gamma: Normal
Clear motion drive: Off
Lens aperture: ?
Lamp power: ?

HD
Color profile: Rec709 No Filter (Mannis curve)
Color temp: 6500K
Gamma: Normal
Clear motion drive: Off
Lens aperture: ?
Lamp power: ?

And as a separate question: Taking the above into account, which of Mannis custom gamma should I use for HDR after the calibration? I'm thinking of this one.
For 4k with HDR you will need a custom gamma curve for it to look good
I am using Manni's DV curve now and will try his 135nits with black=77 curve this week
 

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For 4k with HDR you will need a custom gamma curve for it to look good
I am using Manni's DV curve now and will try his 135nits with black=77 curve this week
Yup I know - I was just thinking of what to set these to prior to Autocal calibration.

Well, I did the calibration and HDR gamma curve upload yesterday (finally :)) using Dreamliners guide and Steves summary and it all went well. I settled on below settings, with lamp always on low and iris/aperture on 0 for HDR and -11 on HD (I just guessed these based on Mike Garrets calculation of more than 250 nits on my 90" screen) and the fact that HDR requires more light than SDR or HD.

See also attached curve results from UHD/4k Autocal.

Equipment
Projector: JVC X5000 (RS400)
Screen: AdeoPro, 90"
Cable: Ruipro HDMI Fiber (10 m/33 feet). See on Amazon.
Player: Sony UHD X800 region free. See on 220-Electronics here.
Calibration: Spyder5 Express, tripod, Windows 10, calibration software

4K/HDR (Picture mode: User 2)
Color profile: BT2020 (from the JVC website)
Color temp: 6500K
Gamma: Normal + Mannis 135 nits (black = 77) in a Custom slot
Clear motion drive: Off
Lens aperture: 0
Lamp power: Low

HD (Picture mode: User 3)
Color profile: Rec-709 No Filter (Mannis curve from AVSForum)
Color temp: 6500K
Gamma: Normal
Clear motion drive: Off
Lens aperture: -11
Lamp power: Low


After calibration

Black crush: I uploaded Manni's 135 nits curve for HDR (see above) into a Custom slot in User 2. I then checked the test patterns found on Sony Blu-rays. All greyscale pillars throughout the spectrum were distinguishable except for the three blackest ones. No amount of Contrast or Brightness adjustment would change this fact.

A couple of questions on black crush:

1. Gamma correction: After calibration, is there a point to correct the value on the scale 2.1, 2.2, 2.3 etc? Will this affect the black crush?
2. Input level: I calibrated with Input level set to Standard. Today I'm gonna try to switch to Super White to see if that affects the black crush. But will that change the dynamics of the calibration? In other words, do I need to recalibrate if I change this value?
 

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Yup I know - I was just thinking of what to set these to prior to Autocal calibration.

Well, I did the calibration and HDR gamma curve upload yesterday (finally :)) using Dreamliners guide and Steves summary and it all went well. I settled on below settings, with lamp always on low and iris/aperture on 0 for HDR and -11 on HD (I just guessed these based on Mike Garrets calculation of more than 250 nits on my 90" screen) and the fact that HDR requires more light than SDR or HD.

See also attached curve results from UHD/4k Autocal.

Equipment
Projector: JVC X5000 (RS400)
Screen: AdeoPro, 90"
Cable: Ruipro HDMI Fiber (10 m/33 feet). See on Amazon.
Player: Sony UHD X800 region free. See on 220-Electronics here.
Calibration: Spyder5 Express, tripod, Windows 10, calibration software

4K/HDR (Picture mode: User 2)
Color profile: BT2020 (from the JVC website)
Color temp: 6500K
Gamma: Normal + Mannis 135 nits (black = 77) in a Custom slot
Clear motion drive: Off
Lens aperture: 0
Lamp power: Low

HD (Picture mode: User 3)
Color profile: Rec-709 No Filter (Mannis curve from AVSForum)
Color temp: 6500K
Gamma: Normal
Clear motion drive: Off
Lens aperture: -11
Lamp power: Low


After calibration

Black crush: I uploaded Manni's 135 nits curve for HDR (see above) into a Custom slot in User 2. I then checked the test patterns found on Sony Blu-rays. All greyscale pillars throughout the spectrum were distinguishable except for the three blackest ones. No amount of Contrast or Brightness adjustment would change this fact.

A couple of questions on black crush:

1. Gamma correction: After calibration, is there a point to correct the value on the scale 2.1, 2.2, 2.3 etc? Will this affect the black crush?
2. Input level: I calibrated with Input level set to Standard. Today I'm gonna try to switch to Super White to see if that affects the black crush. But will that change the dynamics of the calibration? In other words, do I need to recalibrate if I change this value?
You need to run the gamma + color using a standard (cinema, natural etc.) mode in order to calibrate the gamma and save it as the base for the custom curve to work best. In your picture it seem like you run the gamma + color using User mode and with gamma indicate as "-", it would not save the calibrated gamma into the projector.

My X5000 (RS400) can also go down to 0.005 of the sony test pattern.

If you select custom gamma as your gamma curve, make sure you select the "import" as the value to activate the imported custom gamma and not those 2.1, 2.2 etc.
 

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You need to run the gamma + color using a standard (cinema, natural etc.) mode in order to calibrate the gamma and save it as the base for the custom curve to work best. In your picture it seem like you run the gamma + color using User mode and with gamma indicate as "-", it would not save the calibrated gamma into the projector.
I used the BT2020 color profile as a starting point for the calibration. I imported BT2020 into a Custom slot using Autocal and then chose that slot in the Autocal calibration process. Is this not correct? Do I need to use one of the out-of-the-box Color profiles? From reading around on the forum I was under the impression that starting from BT2020 was the way to go.

I believe the reason for the "-" is that the first time I did the calibration the software lost contact with the projector in the middle of the Save process" (I got a Connection lost-popup). The photos attached are from the first calibration. After that I redid the calibration and the Save process went well.

Is there a way in the projector menu to confirm that the calibration was completed and is now active?

If you select custom gamma as your gamma curve, make sure you select the "import" as the value to activate the imported custom gamma and not those 2.1, 2.2 etc.
Aha, thank you.
 

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I used the BT2020 color profile as a starting point for the calibration. I imported BT2020 into a Custom slot using Autocal and then chose that slot in the Autocal calibration process. Is this not correct? Do I need to use one of the out-of-the-box Color profiles? From reading around on the forum I was under the impression that starting from BT2020 was the way to go.

I believe the reason for the "-" is that the first time I did the calibration the software lost contact with the projector in the middle of the Save process" (I got a Connection lost-popup). The photos attached are from the first calibration. After that I redid the calibration and the Save process went well.

Is there a way in the projector menu to confirm that the calibration was completed and is now active?



Aha, thank you.
Yes, for 1st time calibration, you need to use the built in colour profile (i.e. natural, cinema etc) to run the autocal, else it would not save the gamma and it will not be corrected.

the "-" means the gamma will not be corrected.
 

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Yes, for 1st time calibration, you need to use the built in colour profile (i.e. natural, cinema etc) to run the autocal, else it would not save the gamma and it will not be corrected.

the "-" means the gamma will not be corrected.
Ok, so I rerun the calibration using a preinstalled color profile as starting point and then switch to BT2020 and a custom gamma after calibration? How do I know which Color profile mode to start from, Cinema, Natural etc. Or doesn't it matter?

EDIT: Sorry for all the questions, but I'm a bit confused about the process now. I'm nervous that I did not get the initial Autocal calibration correct - will this matter (did I somehow changed a fundamental dynamic now?) or can I just rerun the calibration according to above and still have a pristine calibration record?
 
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