HCFR - Open source projector and display calibration software - Page 403 - AVS Forum | Home Theater Discussions And Reviews
Forum Jump: 
 1440Likes
Reply
 
Thread Tools
post #12061 of 12072 Old 10-03-2019, 03:02 PM
Advanced Member
 
SirMaster's Avatar
 
Join Date: Aug 2009
Location: Wisconsin
Posts: 808
Mentioned: 31 Post(s)
Tagged: 0 Thread(s)
Quoted: 681 Post(s)
Liked: 414
Yeah the “report BT2020” isn’t for HDR mode.

It’s for the opposite basically.

It tells the JVC that the color gamut is BT2020 when you are not in HDR mode.

If you are outputting 12bit color SDR2020, you need to enable the checkbox otherwise the color gamut on the JVC will track wrong.
SirMaster is offline  
Sponsored Links
Advertisement
 
post #12062 of 12072 Old 10-03-2019, 03:05 PM
AVS Forum Special Member
 
Join Date: Dec 2014
Location: Mississauga, ON, Canada
Posts: 6,950
Mentioned: 130 Post(s)
Tagged: 0 Thread(s)
Quoted: 4884 Post(s)
Liked: 1849
Quote:
Originally Posted by SirMaster View Post
Yeah the “report BT2020” isn’t for HDR mode.

It’s for the opposite basically.

It tells the JVC that the color gamut is BT2020 when you are not in HDR mode.

If you are outputting 12bit color SDR2020, you need to enable the checkbox otherwise the color gamut on the JVC will track wrong.
Unless this has changed for the native 4K models, I don't see how the projector can "track wrong" if it's already using using the BT.2020 profile.
Dominic Chan is offline  
post #12063 of 12072 Old 10-03-2019, 03:32 PM
Advanced Member
 
grendelrt's Avatar
 
Join Date: Jun 2004
Location: Richmond, VA
Posts: 960
Mentioned: 3 Post(s)
Tagged: 0 Thread(s)
Quoted: 578 Post(s)
Liked: 308
Quote:
Originally Posted by Dominic Chan View Post
The P3 filter increases the green saturation; it doesn't make the greyscale turn green.


Reducing green will reduce the luminance, but one shouldn't be afraid to touch it when necessary.

Running the JVC autocal should take care of this kind of issue.
Awesome, I was thinking of trying autocal tonight and see if it fixes it. First time trying autocal, so fingers crossed
grendelrt is offline  
Sponsored Links
Advertisement
 
post #12064 of 12072 Old 10-03-2019, 03:36 PM
Advanced Member
 
SirMaster's Avatar
 
Join Date: Aug 2009
Location: Wisconsin
Posts: 808
Mentioned: 31 Post(s)
Tagged: 0 Thread(s)
Quoted: 681 Post(s)
Liked: 414
Quote:
Originally Posted by Dominic Chan View Post
Unless this has changed for the native 4K models, I don't see how the projector can "track wrong" if it's already using using the BT.2020 profile.


Yep, it’s new in the 4K NX models.

It also only happens when you are outputting 12bit.

If you output in 8bit SDR2020 you don’t need the checkbox.
SirMaster is offline  
post #12065 of 12072 Old 10-04-2019, 05:22 PM
Advanced Member
 
grendelrt's Avatar
 
Join Date: Jun 2004
Location: Richmond, VA
Posts: 960
Mentioned: 3 Post(s)
Tagged: 0 Thread(s)
Quoted: 578 Post(s)
Liked: 308
Ok follow up stupid question. Ran autocal today and then calibrated with HCFR and my SDR calibration is spot on for everything. My 2020 profile is on if I drop green and blue gain a bit for grayscale, gamma is good as well. Color, if I use a reference of rec2020 in HCFR is way off and if I set it to Rec2020/P3 its decently close. So I am assuming this is due to the JVC not covering Rec2020 but being relatively close to covering P3? So how are you supposed to do primaries and secondaries in this case? Should I use Rec2020/P3(even thought it only covers around 95%) to calibrate those and then not worry about what it looks like in Rec2020 normal?

Last edited by grendelrt; 10-04-2019 at 05:29 PM.
grendelrt is offline  
post #12066 of 12072 Old 10-04-2019, 06:52 PM
AVS Forum Special Member
 
Join Date: Dec 2014
Location: Mississauga, ON, Canada
Posts: 6,950
Mentioned: 130 Post(s)
Tagged: 0 Thread(s)
Quoted: 4884 Post(s)
Liked: 1849
Quote:
Originally Posted by grendelrt View Post
Ok follow up stupid question. Ran autocal today and then calibrated with HCFR and my SDR calibration is spot on for everything. My 2020 profile is on if I drop green and blue gain a bit for grayscale, gamma is good as well. Color, if I use a reference of rec2020 in HCFR is way off and if I set it to Rec2020/P3 its decently close. So I am assuming this is due to the JVC not covering Rec2020 but being relatively close to covering P3? So how are you supposed to do primaries and secondaries in this case? Should I use Rec2020/P3(even thought it only covers around 95%) to calibrate those and then not worry about what it looks like in Rec2020 normal?
This was discussed recently. See posts 11959 and the replies that follow.

Last edited by Dominic Chan; 10-04-2019 at 07:18 PM.
Dominic Chan is offline  
post #12067 of 12072 Old 10-04-2019, 08:26 PM
Advanced Member
 
grendelrt's Avatar
 
Join Date: Jun 2004
Location: Richmond, VA
Posts: 960
Mentioned: 3 Post(s)
Tagged: 0 Thread(s)
Quoted: 578 Post(s)
Liked: 308
Quote:
Originally Posted by Dominic Chan View Post
This was discussed recently. See posts 11959 and the replies that follow.
Perfection, exactly what I was looking for, thanks Dominic.
grendelrt is offline  
post #12068 of 12072 Old 10-05-2019, 10:06 AM
Advanced Member
 
grendelrt's Avatar
 
Join Date: Jun 2004
Location: Richmond, VA
Posts: 960
Mentioned: 3 Post(s)
Tagged: 0 Thread(s)
Quoted: 578 Post(s)
Liked: 308
After using the Rec2020 advice I was able to recalibrate my 2020 profile using 50% saturations then use P3 to do a final check. I have not tried 12pt gamma in autocal yet, I only used the offset controls. I lost about 7nits (145 to 138nits) removing the green from grayscale and adjusting blue down, not worried about the loss at all. Any advice based on these outputs?

Rec2020 P3
PDF https://drive.google.com/open?id=1Mr...t84KjRd6FLJXle
CHC https://drive.google.com/open?id=13F...iXhYJUs2pVJUsk

SDR
PDF https://drive.google.com/open?id=1ht...ms8l7oFLaLd-Yp
CHC https://drive.google.com/open?id=16N...sfFW4-37bXsQJp
grendelrt is offline  
post #12069 of 12072 Old 10-05-2019, 10:47 AM
AVS Forum Special Member
 
Join Date: Dec 2014
Location: Mississauga, ON, Canada
Posts: 6,950
Mentioned: 130 Post(s)
Tagged: 0 Thread(s)
Quoted: 4884 Post(s)
Liked: 1849
Quote:
Originally Posted by grendelrt View Post
After using the Rec2020 advice I was able to recalibrate my 2020 profile using 50% saturations then use P3 to do a final check. I have not tried 12pt gamma in autocal yet, I only used the offset controls. I lost about 7nits (145 to 138nits) removing the green from grayscale and adjusting blue down, not worried about the loss at all. Any advice based on these outputs?
The results look very good.

The SDR green is a little off (common problem), you should be able to get better results by using a Rec709F colour profile (with filter).
Dominic Chan is offline  
post #12070 of 12072 Old 10-05-2019, 10:49 AM
Advanced Member
 
grendelrt's Avatar
 
Join Date: Jun 2004
Location: Richmond, VA
Posts: 960
Mentioned: 3 Post(s)
Tagged: 0 Thread(s)
Quoted: 578 Post(s)
Liked: 308
Quote:
Originally Posted by Dominic Chan View Post
The results look very good.



The SDR green is a little off (common problem), you should be able to get better results by using a Rec709F colour profile (with filter).
Thanks Dominic! I may try that next time, after the new jvc firmware hits.
grendelrt is offline  
post #12071 of 12072 Old 10-06-2019, 01:27 AM
Member
 
Join Date: Mar 2018
Posts: 154
Mentioned: 5 Post(s)
Tagged: 0 Thread(s)
Quoted: 122 Post(s)
Liked: 82
Deleted - found the answer

Last edited by tarbat; 10-06-2019 at 08:47 AM.
tarbat is online now  
post #12072 of 12072 Old 10-20-2019, 05:46 PM
Senior Member
 
chronitis's Avatar
 
Join Date: Jan 2009
Posts: 284
Mentioned: 23 Post(s)
Tagged: 0 Thread(s)
Quoted: 185 Post(s)
Liked: 135
Is it possible to calibrate Dolby vision in hcfr? There are test patterns available here. I'm also not sure if these will work with my c8. Any advice is appreciated.

https://www.diversifiedvideosolution...by_vision.html
chronitis is offline  
Sponsored Links
Advertisement
 
Reply Display Calibration

Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page


Forum Jump: 

Posting Rules  
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off