HCFR - Open source projector and display calibration software - Page 304 - AVS Forum | Home Theater Discussions And Reviews
Forum Jump: 
 1405Likes
Reply
 
Thread Tools
post #9091 of 11720 Old 07-20-2017, 05:04 AM
Member
 
generationgav's Avatar
 
Join Date: Jan 2014
Posts: 28
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 7 Post(s)
Liked: 11
Quote:
Originally Posted by Dominic Chan View Post
With most TVs, the 10-pt gamma controls are also used for grey scale adjustments, i.e., you need to ensure R=G=B at IRE.
I've got a Panasonic CX-680 it has 10 point RGB controls and it has 10 point Gamma Gain - I've currently got the greyscale pretty much spot on now, but the gamma is too low at higher IREs, not even started with primaries yet.
generationgav is offline  
Sponsored Links
Advertisement
 
post #9092 of 11720 Old 07-20-2017, 05:31 PM
Advanced Member
 
carillon's Avatar
 
Join Date: Nov 2006
Location: Knoxville, TN
Posts: 582
Mentioned: 6 Post(s)
Tagged: 0 Thread(s)
Quoted: 259 Post(s)
Liked: 53
Just finished calibrating again. Would like some feedback please. I changed the Gamma setting on my TV from -1 to 0 and set the color targets to 75% before doing the measurements and corrections. Thanks!
Attached Files
File Type: zip Full Tilt Boogie 072017 g0.zip (38.8 KB, 10 views)

Last edited by carillon; 07-20-2017 at 05:59 PM.
carillon is offline  
post #9093 of 11720 Old 07-20-2017, 06:39 PM
AVS Forum Special Member
 
Join Date: Dec 2014
Location: Mississauga, ON, Canada
Posts: 6,425
Mentioned: 121 Post(s)
Tagged: 0 Thread(s)
Quoted: 4483 Post(s)
Liked: 1678
Quote:
Originally Posted by carillon View Post
Just finished calibrating again. Would like some feedback please. I changed the Gamma setting on my TV from -1 to 0 and set the color targets to 75% before doing the measurements and corrections. Thanks!
The colours are much more accurate than before.
What is your target gamma? The Reference shows BT.1886 but the actual curve is 2.2 or lower.
Dominic Chan is offline  
Sponsored Links
Advertisement
 
post #9094 of 11720 Old 07-20-2017, 06:42 PM
Advanced Member
 
carillon's Avatar
 
Join Date: Nov 2006
Location: Knoxville, TN
Posts: 582
Mentioned: 6 Post(s)
Tagged: 0 Thread(s)
Quoted: 259 Post(s)
Liked: 53
Quote:
Originally Posted by Dominic Chan View Post
The colours are much more accurate than before.
What is your target gamma? The Reference shows BT.1886 but the actual curve is 2.2 or lower.
Thanks Dominic, where do I check to see what the target gamma is?
carillon is offline  
post #9095 of 11720 Old 07-20-2017, 06:42 PM
Senior Member
 
Overrid3's Avatar
 
Join Date: Jun 2017
Posts: 319
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 187 Post(s)
Liked: 102
I played around with a different white point in HCFR for my OLED. Now that I'm just using D65 again, the x and y values (in the preferences window) did not revert to what they were before. However, they are greyed out, and the little box that says "change white point" is unchecked. This should have any effect on my calibration, right?
Overrid3 is offline  
post #9096 of 11720 Old 07-20-2017, 07:56 PM
AVS Forum Special Member
 
Join Date: Dec 2014
Location: Mississauga, ON, Canada
Posts: 6,425
Mentioned: 121 Post(s)
Tagged: 0 Thread(s)
Quoted: 4483 Post(s)
Liked: 1678
Quote:
Originally Posted by Overrid3 View Post
I played around with a different white point in HCFR for my OLED. Now that I'm just using D65 again, the x and y values (in the preferences window) did not revert to what they were before. However, they are greyed out, and the little box that says "change white point" is unchecked. This should have any effect on my calibration, right?
This is a bug in HCFR. You do need to restore them to the standard values by clicking Apply after unchecking "change white point".
Overrid3 likes this.
Dominic Chan is offline  
post #9097 of 11720 Old 07-20-2017, 08:34 PM
AVS Forum Special Member
 
Join Date: Dec 2014
Location: Mississauga, ON, Canada
Posts: 6,425
Mentioned: 121 Post(s)
Tagged: 0 Thread(s)
Quoted: 4483 Post(s)
Liked: 1678
Quote:
Originally Posted by carillon View Post
Thanks Dominic, where do I check to see what the target gamma is?
By "target gamma", I simply meant the gamma you are aiming for in the calibration.
carillon likes this.
Dominic Chan is offline  
post #9098 of 11720 Old 07-20-2017, 08:43 PM
Senior Member
 
Overrid3's Avatar
 
Join Date: Jun 2017
Posts: 319
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 187 Post(s)
Liked: 102
Quote:
Originally Posted by Dominic Chan View Post
This is a bug in HCFR. You do need to restore them to the standard values by clicking Apply after unchecking "change white point".
Thanks. I'll have to mess with it some more. I remember unchecking the box and applying, but the values didn't go back to the standard. They just stayed greyed out.
Overrid3 is offline  
post #9099 of 11720 Old 07-20-2017, 09:33 PM
CFC
Advanced Member
 
CFC's Avatar
 
Join Date: Apr 2003
Location: Houston, TX
Posts: 796
Mentioned: 4 Post(s)
Tagged: 0 Thread(s)
Quoted: 62 Post(s)
Liked: 30
Quote:
Originally Posted by carillon View Post
Thanks Dominic, where do I check to see what the target gamma is?
To get a visual of the gamma, you can either select "gamma" in the pull down in the information box that's beneath the measures box, or simply click on the gamma graph - by default it's the third icon to the right of the continuous read button.
To see which gamma target you have active, you go Advanced->Preferences and click on the "References" tab.
You have it at the HCFR default for a pure BT.1886 gamma curve.
What @Dominic Chan was pointing out is that your current curve isn't following BT.1886 even though that's what you have currently as the target. Your curve is pretty close to 2.2 power gamma at an average of 2.23.
If you'd like to adjust your gamma, you can change the options in Advanced->Preferences "Advanced" tab so that your "color difference formula" is CIE2000, though it could be any of the others, and that your "gray scale dE handling" is Absolute Y w/gamma.
See the attached picture - this is your gamma curve in yellow. The gamma target is changed to 2.2 and is orange - you can choose which gamma you'd like as I said above in the references option tab.

Ideally, the yellow and orange curve would overlap for a proper gamma.
If you did want to reach 2.2 gamma, you'd need to increase your red, green and blue from 10% up to 70%, and reduce your red, green and blue at 80% and 90%.
It's more important that your reading follows a gamma, any gamma, rather than be a random curve. So you could choose 2.22, 2.3, 2.4 whatever suits you, but just make sure that you are tracking properly.

Hope that makes sense.
Good luck and have fun.

CFC
Attached Thumbnails
Click image for larger version

Name:	Gamma.jpg
Views:	279
Size:	69.5 KB
ID:	2250025  
carillon likes this.

Signature goes here

Last edited by CFC; 07-20-2017 at 09:37 PM.
CFC is offline  
post #9100 of 11720 Old 07-21-2017, 12:56 AM
Newbie
 
virility's Avatar
 
Join Date: Aug 2011
Posts: 7
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
Liked: 10
Hello,

I have a big problem with HCFR and a X-Rite i1 Pro Sensor.

I tried to calibrate my beamer, a Panasonic PT-AT 6000. Due to the large amount of gamma settings, the calibration was very easy. At the end I had a very good result:




Unfortunately everything is quite "RED" . A greyscale isn´t grey from 0 -> 100 IRE but reddish.

Anybody any idea?
Regards from germany.
virility is offline  
post #9101 of 11720 Old 07-21-2017, 02:33 AM
AVS Forum Special Member
 
ConnecTEDDD's Avatar
 
Join Date: Sep 2010
Location: Athens, Greece
Posts: 7,752
Mentioned: 179 Post(s)
Tagged: 1 Thread(s)
Quoted: 2921 Post(s)
Liked: 3569
Quote:
Originally Posted by grendelrt View Post
I have only done 2pt controls at 80/30 starting with 80 to use gain first. For 10pt where should you start 100 first then 90,80,70 etc?

Sent from my SM-G920V using Tapatalk
Hi, when you have 2 and 10-Point RGB Balance controls available then it's better to start with 2-Point to do 30-100 and then move to 10-Point adjustments.

Ted's LightSpace CMS Calibration Disk Free Version for Free Calibration Software: LightSpace DPS / CalMAN ColorChecker / HCFR
S/W: LightSpace CMS, SpaceMan ICC, SpaceMatch DCM, CalMAN 5, CalMAN RGB, ChromaPure, ControlCAL
V/P: eeColor 3D LUT Box - P/G: DVDO AVLab TPG
Meters: JETI Specbos 1211, Klein K-10A, i1PRO2, i1PRO, SpectraCAL C6, i1D3, C5
ConnecTEDDD is online now  
post #9102 of 11720 Old 07-21-2017, 02:33 AM
Member
 
generationgav's Avatar
 
Join Date: Jan 2014
Posts: 28
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 7 Post(s)
Liked: 11
Right - I've managed to calibrate my TV so I'm pretty happy with the white balance and gamma. Blue is a bit off bit

I've also calibrated the primaries - I first did these using 75% by setting "Standard to HDTV - REC 709 (75%/75%)" then using the AVS 709 mp4 calibration mp4s.
When I got under 1 dE the colours were completely out of whack and really washed out and just not right at all.

I did it again using 100% and the colours look great now, but when I do it at 75% it says the colours (apart from white) are a long way off.

I think it's me doing something wrong, as the colours do look pretty great now and what I expect, is there something else I need to set on HCFR to change the measurement?
generationgav is offline  
post #9103 of 11720 Old 07-21-2017, 02:35 AM
Member
 
generationgav's Avatar
 
Join Date: Jan 2014
Posts: 28
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 7 Post(s)
Liked: 11
Quote:
Originally Posted by ConnecTEDDD View Post
Hi, when you have 2 and 10-Point RGB Balance controls available then it's better to start with 2-Point to do 30-100 and then move to 10-Point adjustments.
I've got gain, cut off and 10 point.

I ended up doing 80 using gain and cut off, but I couldn't get 30 and 80 both close, so ended up doing 80 perfectly as it was pretty close anyway, then I did 10 point manually. Is that a bad way of doing it?
generationgav is offline  
post #9104 of 11720 Old 07-21-2017, 02:45 AM
AVS Forum Special Member
 
ConnecTEDDD's Avatar
 
Join Date: Sep 2010
Location: Athens, Greece
Posts: 7,752
Mentioned: 179 Post(s)
Tagged: 1 Thread(s)
Quoted: 2921 Post(s)
Liked: 3569
Quote:
Originally Posted by generationgav View Post
I've got gain, cut off and 10 point.

I ended up doing 80 using gain and cut off, but I couldn't get 30 and 80 both close, so ended up doing 80 perfectly as it was pretty close anyway, then I did 10 point manually. Is that a bad way of doing it?
It requires a lot of back-forth re-adjusting 30%-80% multiple times because adjusting the Gains (with 80% Gray Pattern) will affect the 30% Gray (Cuts) also, so you need to do multiple run until to get stable results.

It can work with 30/80 like you did, just with 30/100 you will save some time and you will have less adjustments.

Ted's LightSpace CMS Calibration Disk Free Version for Free Calibration Software: LightSpace DPS / CalMAN ColorChecker / HCFR
S/W: LightSpace CMS, SpaceMan ICC, SpaceMatch DCM, CalMAN 5, CalMAN RGB, ChromaPure, ControlCAL
V/P: eeColor 3D LUT Box - P/G: DVDO AVLab TPG
Meters: JETI Specbos 1211, Klein K-10A, i1PRO2, i1PRO, SpectraCAL C6, i1D3, C5
ConnecTEDDD is online now  
post #9105 of 11720 Old 07-21-2017, 02:49 AM
AVS Forum Special Member
 
ConnecTEDDD's Avatar
 
Join Date: Sep 2010
Location: Athens, Greece
Posts: 7,752
Mentioned: 179 Post(s)
Tagged: 1 Thread(s)
Quoted: 2921 Post(s)
Liked: 3569
Quote:
Originally Posted by generationgav View Post
Right - I've managed to calibrate my TV so I'm pretty happy with the white balance and gamma. Blue is a bit off bit

I've also calibrated the primaries - I first did these using 75% by setting "Standard to HDTV - REC 709 (75%/75%)" then using the AVS 709 mp4 calibration mp4s.
When I got under 1 dE the colours were completely out of whack and really washed out and just not right at all.

I did it again using 100% and the colours look great now, but when I do it at 75% it says the colours (apart from white) are a long way off.

I think it's me doing something wrong, as the colours do look pretty great now and what I expect, is there something else I need to set on HCFR to change the measurement?
Hi, using AVSHD disk for Color Gamut calibration you have 2 options: 75% Color (which has 100% Saturation with 75% Luminance) or 100% Color (which has 100% Saturation with 100% Luminance)

There is no 75% Stimulus with 75% Saturation Patterns in AVSHD disk.

Also from the AVSHD Saturation Sweeps; using 75% Saturation with 100% Stimulus; the patterns are not matching the RGB Triplets of HCFR engine, they are slight different.

For Example:

AVSHD 50% Red Saturation Pattern has RGB Triplet 190.95.95 but HCFR's Color Engine needs/calculates errors from RGB Triplet 191.96.96, it's 0.42 dE2000 error.

AVSHD 75% Magenta Saturation Pattern has RGB Triplet 203.100.203 but HCFR's Color Engine needs/calculates errors from RGB Triplet 202.99.202, it's 0.36 dE2000 error.

Here is an example of calibration disk which is accurate for HCFR users with many measurement options for verification: ***Official B/C/E/G6P OLED Calibration Thread

Ted's LightSpace CMS Calibration Disk Free Version for Free Calibration Software: LightSpace DPS / CalMAN ColorChecker / HCFR
S/W: LightSpace CMS, SpaceMan ICC, SpaceMatch DCM, CalMAN 5, CalMAN RGB, ChromaPure, ControlCAL
V/P: eeColor 3D LUT Box - P/G: DVDO AVLab TPG
Meters: JETI Specbos 1211, Klein K-10A, i1PRO2, i1PRO, SpectraCAL C6, i1D3, C5
ConnecTEDDD is online now  
post #9106 of 11720 Old 07-21-2017, 03:06 AM
Member
 
generationgav's Avatar
 
Join Date: Jan 2014
Posts: 28
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 7 Post(s)
Liked: 11
Quote:
Originally Posted by ConnecTEDDD View Post
It requires a lot of back-forth re-adjusting 30%-80% multiple times because adjusting the Gains (with 80% Gray Pattern) will affect the 30% Gray (Cuts) also, so you need to do multiple run until to get stable results.

It can work with 30/80 like you did, just with 30/100 you will save some time and you will have less adjustments.
So you would do 100 with cut off and then 30 with gain, then do individual?
generationgav is offline  
post #9107 of 11720 Old 07-21-2017, 03:16 AM
AVS Forum Special Member
 
ConnecTEDDD's Avatar
 
Join Date: Sep 2010
Location: Athens, Greece
Posts: 7,752
Mentioned: 179 Post(s)
Tagged: 1 Thread(s)
Quoted: 2921 Post(s)
Liked: 3569
Quote:
Originally Posted by generationgav View Post
So you would do 100 with cut off and then 30 with gain, then do individual?
100% White with RGB Gains, then 30% Grey with RGB Cuts, then remeasure 100% (it will require re-adjust), then re-measure 30% (it will require re-adjust)...then multiple times back/forth 100/30 until measurements are stable, then go to 10-Point.

Ted's LightSpace CMS Calibration Disk Free Version for Free Calibration Software: LightSpace DPS / CalMAN ColorChecker / HCFR
S/W: LightSpace CMS, SpaceMan ICC, SpaceMatch DCM, CalMAN 5, CalMAN RGB, ChromaPure, ControlCAL
V/P: eeColor 3D LUT Box - P/G: DVDO AVLab TPG
Meters: JETI Specbos 1211, Klein K-10A, i1PRO2, i1PRO, SpectraCAL C6, i1D3, C5
ConnecTEDDD is online now  
post #9108 of 11720 Old 07-21-2017, 03:18 AM
Member
 
generationgav's Avatar
 
Join Date: Jan 2014
Posts: 28
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 7 Post(s)
Liked: 11
Quote:
Originally Posted by ConnecTEDDD View Post
Hi, using AVSHD disk for Color Gamut calibration you have 2 options: 75% Color (which has 100% Saturation with 75% Luminance) or 100% Color (which has 100% Saturation with 100% Luminance)
So I should have left the settings to REC 709 and not set it to 75%/75% as that's just saturation? That would explain it and I'll go over it again.

However I didn't click the rounding options on HCFR so looks like I might be re-running through it all anyway, have requested TEDs disc so will give that one a go, thanks very much for your help!
generationgav is offline  
post #9109 of 11720 Old 07-21-2017, 03:28 AM
AVS Forum Special Member
 
ConnecTEDDD's Avatar
 
Join Date: Sep 2010
Location: Athens, Greece
Posts: 7,752
Mentioned: 179 Post(s)
Tagged: 1 Thread(s)
Quoted: 2921 Post(s)
Liked: 3569
Quote:
Originally Posted by generationgav View Post
So I should have left the settings to REC 709 and not set it to 75%/75% as that's just saturation? That would explain it and I'll go over it again.
Yes, when you have AVSHD, only REC.709 colorspace option you should check.

About what patterns can provide you better results, it need some testing, look here: https://www.avsforum.com/forum/139-di...l#post53765713

Quote:
Originally Posted by generationgav View Post
However I didn't click the rounding options on HCFR so looks like I might be re-running through it all anyway, have requested TEDs disc so will give that one a go, thanks very much for your help!
This will fix some grayscale gamma calculations.

Ted's LightSpace CMS Calibration Disk Free Version for Free Calibration Software: LightSpace DPS / CalMAN ColorChecker / HCFR
S/W: LightSpace CMS, SpaceMan ICC, SpaceMatch DCM, CalMAN 5, CalMAN RGB, ChromaPure, ControlCAL
V/P: eeColor 3D LUT Box - P/G: DVDO AVLab TPG
Meters: JETI Specbos 1211, Klein K-10A, i1PRO2, i1PRO, SpectraCAL C6, i1D3, C5
ConnecTEDDD is online now  
post #9110 of 11720 Old 07-21-2017, 03:48 AM
Member
 
generationgav's Avatar
 
Join Date: Jan 2014
Posts: 28
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 7 Post(s)
Liked: 11
Quote:
Originally Posted by ConnecTEDDD View Post
Yes, when you have AVSHD, only REC.709 colorspace option you should check.

About what patterns can provide you better results, it need some testing, look here: https://www.avsforum.com/forum/139-di...l#post53765713



This will fix some grayscale gamma calculations.
Thanks - I have a feeling the percentages we're talking about are beyond what level I'm going to calibrate it to anyway - but definitely good to know! It's a relatively budget TV and I've borrowed the sensor - so definitely not expecting perfect results, but good to have it better.
generationgav is offline  
post #9111 of 11720 Old 07-21-2017, 03:50 AM
AVS Forum Special Member
 
Join Date: Dec 2014
Location: Mississauga, ON, Canada
Posts: 6,425
Mentioned: 121 Post(s)
Tagged: 0 Thread(s)
Quoted: 4483 Post(s)
Liked: 1678
Quote:
Originally Posted by virility View Post
Hello,

I have a big problem with HCFR and a X-Rite i1 Pro Sensor.

I tried to calibrate my beamer, a Panasonic PT-AT 6000. Due to the large amount of gamma settings, the calibration was very easy. At the end I had a very good result:




Unfortunately everything is quite "RED" . A greyscale isn´t grey from 0 -> 100 IRE but reddish.
Looks like the projector is clipping. Reduce the Contrast to remove the discoloration at 100%.
Dominic Chan is offline  
post #9112 of 11720 Old 07-21-2017, 05:52 AM
Advanced Member
 
carillon's Avatar
 
Join Date: Nov 2006
Location: Knoxville, TN
Posts: 582
Mentioned: 6 Post(s)
Tagged: 0 Thread(s)
Quoted: 259 Post(s)
Liked: 53
Quote:
Originally Posted by Dominic Chan View Post
By "target gamma", I simply meant the gamma you are aiming for in the calibration.
Thanks Dominic, I was hoping to get closer to 2.2 instead of 2.4 since my room is usually more bright than dark.
carillon is offline  
post #9113 of 11720 Old 07-21-2017, 05:59 AM
Advanced Member
 
carillon's Avatar
 
Join Date: Nov 2006
Location: Knoxville, TN
Posts: 582
Mentioned: 6 Post(s)
Tagged: 0 Thread(s)
Quoted: 259 Post(s)
Liked: 53
Quote:
Originally Posted by CFC View Post
If you did want to reach 2.2 gamma, you'd need to increase your red, green and blue from 10% up to 70%, and reduce your red, green and blue at 80% and 90%.CFC
@CFC ... to increase RGB for 10% - 70% would put them over 100% and reducing RGB for 80% and 90% would put them under 100%. I guess I'm not sure how I can adjust for a smooth grayscale that tracks accurately and adjust gamma. Wouldn't my grayscale suffer if I do what you mentioned?

I tried the CIE2000 setting with Absolute Y w/gamma. My grayscale and colors don't even measure when I run the measurements. I get all zeroes.

Last edited by carillon; 07-21-2017 at 06:08 AM.
carillon is offline  
post #9114 of 11720 Old 07-21-2017, 06:09 AM
CFC
Advanced Member
 
CFC's Avatar
 
Join Date: Apr 2003
Location: Houston, TX
Posts: 796
Mentioned: 4 Post(s)
Tagged: 0 Thread(s)
Quoted: 62 Post(s)
Liked: 30
Quote:
Originally Posted by carillon View Post
@CFC ... to increase RGB for 10% - 70% would put them over 100% and reducing RGB for 80% and 90% would put them under 100%. I guess I'm not sure how I can adjust for a smooth grayscale that tracks accurately and adjust gamma. Wouldn't my grayscale suffer if I do what you mentioned?
No.
Because your current dE calculation in your preferences is not considering gamma ("Absolute Y wo/gamma"), the RGB bars in your measure are being balanced against each other - meaning it's making sure you have the right amount of red, green and blue for a D65 white, but not considering how bright it should be. It's disregarding the Y target.
As soon as you change your dE calculation to "Absolute Y w/gamma", you'll notice that your dE numbers will go up, and when you'll look at the RGB bars, you'll see that from about 10% to 60% stimulus they will be below 100%. The bars at 80% and 90% stimulus will be above 100%. At 70% you're pretty much on target for a 2.2 gamma.
Adjusting to 100% in that scenario will bring your gamma on track. You need to make sure you also change your target gamma in the preferences to whatever you're looking to achieve (2.2 power law in your case as you said in the previous post), so that your Y targets get properly calculated.
Just switch your dE calculation and gamma target in the preferences and it will become more obvious.


CFC
carillon likes this.

Signature goes here

Last edited by CFC; 07-21-2017 at 06:13 AM.
CFC is offline  
post #9115 of 11720 Old 07-21-2017, 06:33 AM
Advanced Member
 
carillon's Avatar
 
Join Date: Nov 2006
Location: Knoxville, TN
Posts: 582
Mentioned: 6 Post(s)
Tagged: 0 Thread(s)
Quoted: 259 Post(s)
Liked: 53
Quote:
Originally Posted by CFC View Post
No.
Because your current dE calculation in your preferences is not considering gamma ("Absolute Y wo/gamma"), the RGB bars in your measure are being balanced against each other - meaning it's making sure you have the right amount of red, green and blue for a D65 white, but not considering how bright it should be. It's disregarding the Y target.
As soon as you change your dE calculation to "Absolute Y w/gamma", you'll notice that your dE numbers will go up, and when you'll look at the RGB bars, you'll see that from about 10% to 60% stimulus they will be below 100%. The bars at 80% and 90% stimulus will be above 100%. At 70% you're pretty much on target for a 2.2 gamma.
Adjusting to 100% in that scenario will bring your gamma on track. You need to make sure you also change your target gamma in the preferences to whatever you're looking to achieve (2.2 power law in your case as you said in the previous post), so that your Y targets get properly calculated.
Just switch your dE calculation and gamma target in the preferences and it will become more obvious.


CFC

Thanks @CFC ... Here are my measurements after changing to CIE2000 and Absolute Y w/gamma. Settings on the TV were not changed. Thoughts?
Attached Files
File Type: zip CIE2000 Absolute Y with gamma.zip (1.2 KB, 8 views)
carillon is offline  
post #9116 of 11720 Old 07-21-2017, 06:48 AM
CFC
Advanced Member
 
CFC's Avatar
 
Join Date: Apr 2003
Location: Houston, TX
Posts: 796
Mentioned: 4 Post(s)
Tagged: 0 Thread(s)
Quoted: 62 Post(s)
Liked: 30
Quote:
Originally Posted by carillon View Post
Thanks @CFC ... Here are my measurements after changing to CIE2000 and Absolute Y w/gamma. Settings on the TV were not changed. Thoughts?
Did you also adjust your gamma target?
I can't look at it now - away from home, but if it's reading like the previous one, all my comments would apply if you haven't made any settings changes on the TV.
Changing the gamma, dE reference etc... doesn't require retaking measurements, it just adjusts your targets and dE numbers in HCFR.


CFC
carillon likes this.

Signature goes here
CFC is offline  
post #9117 of 11720 Old 07-21-2017, 06:54 AM
Advanced Member
 
carillon's Avatar
 
Join Date: Nov 2006
Location: Knoxville, TN
Posts: 582
Mentioned: 6 Post(s)
Tagged: 0 Thread(s)
Quoted: 259 Post(s)
Liked: 53
Quote:
Originally Posted by CFC View Post
Did you also adjust your gamma target?
I can't look at it now - away from home, but if it's reading like the previous one, all my comments would apply if you haven't made any settings changes on the TV.
Changing the gamma, dE reference etc... doesn't require retaking measurements, it just adjusts your targets and dE numbers in HCFR.


CFC
Thanks @CFC ... I left the target as BT.1886. Maybe this screenshot can help. Notice how much I'd have to lower the RGB for 20%. Could that possibly be okay?
Attached Thumbnails
Click image for larger version

Name:	Screen Shot 2017-07-21 at 9.52.35 AM.jpg
Views:	29
Size:	163.7 KB
ID:	2250449  
carillon is offline  
post #9118 of 11720 Old 07-21-2017, 07:03 AM
CFC
Advanced Member
 
CFC's Avatar
 
Join Date: Apr 2003
Location: Houston, TX
Posts: 796
Mentioned: 4 Post(s)
Tagged: 0 Thread(s)
Quoted: 62 Post(s)
Liked: 30
Quote:
Originally Posted by carillon View Post
Thanks @CFC ... I left the target as BT.1886. Maybe this screenshot can help. Notice how much I'd have to lower the RGB for 20%. Could that possibly be okay?
It could be. It could not be. It just depends on the headroom available on your set. In general you don't want to have to move too far away from baseline, but that can vary.
I'm not used to the readings the way you have them in RGB, I'm more familiar with xyY view. Any particular reason you changed that?
The way you have it displaying, it doesn't show you what your current Y reading is. From what I remember you weren't very far away.


CFC
carillon likes this.

Signature goes here
CFC is offline  
post #9119 of 11720 Old 07-21-2017, 07:27 AM
Advanced Member
 
carillon's Avatar
 
Join Date: Nov 2006
Location: Knoxville, TN
Posts: 582
Mentioned: 6 Post(s)
Tagged: 0 Thread(s)
Quoted: 259 Post(s)
Liked: 53
Quote:
Originally Posted by CFC View Post
It could be. It could not be. It just depends on the headroom available on your set. In general you don't want to have to move too far away from baseline, but that can vary.
I'm not used to the readings the way you have them in RGB, I'm more familiar with xyY view. Any particular reason you changed that?
The way you have it displaying, it doesn't show you what your current Y reading is. From what I remember you weren't very far away.


CFC
I have them set in RGB because that's how my Samsung color management is set up for making adjustments. I think I have things dialed in a bit closer now. When you have a chance, take a look at my latest run. Really appreciate it!!
Attached Files
File Type: zip Full Tilt Boogie 072117.zip (26.9 KB, 5 views)

Last edited by carillon; 07-21-2017 at 07:34 AM.
carillon is offline  
post #9120 of 11720 Old 07-21-2017, 08:47 AM
CFC
Advanced Member
 
CFC's Avatar
 
Join Date: Apr 2003
Location: Houston, TX
Posts: 796
Mentioned: 4 Post(s)
Tagged: 0 Thread(s)
Quoted: 62 Post(s)
Liked: 30
Quote:
Originally Posted by carillon View Post
I have them set in RGB because that's how my Samsung color management is set up for making adjustments. I think I have things dialed in a bit closer now. When you have a chance, take a look at my latest run. Really appreciate it!!
Ah okay.I think that matters more for the RGB bars on the left side bar when looking at colors, not necessarily the measures.
My TV has Hue, Saturation and Value (luminance) CMS controls, so I checked the "Use HSV Levels" option, so that whenever I'm adjusting colors, the bars change from RGB to HSV.
For gray scale adjustments it's always RGB.


CFC

Signature goes here

Last edited by CFC; 07-21-2017 at 10:19 AM.
CFC 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