Additional SDR Gamma Curves for Sony Projectors - AVS Forum | Home Theater Discussions And Reviews
Forum Jump: 
 2Likes
  • 2 Post By OMARDRIS
 
Thread Tools
post #1 of 10 Old 12-07-2017, 02:16 AM - Thread Starter
Member
 
OMARDRIS's Avatar
 
Join Date: Jul 2007
Location: Germany
Posts: 117
Mentioned: 4 Post(s)
Tagged: 0 Thread(s)
Quoted: 76 Post(s)
Liked: 128
Additional SDR Gamma Curves for Sony Projectors

Hello @All ,
the selection of SDR gamma curves on the Sony projectors is very modest just around the Gamma 2.2. In addition, sometimes the Sonys have to fight with a light Gammadrift.
Since not everyone wants to do manual gamma curves with Projector Calibration Pro or the ImageDirector, I'll just make some curves available, which might help in some cases.
The "Custom SDR Forums Edition" includes 6 new gamma presets and complements the standard gamma curves (1.8 / 2.0 / 2.1 / 2.2 / 2.4 / 2.6) of Sony projectors to case by case to choose a better fitting gamma curve. Especially in connection with a slight gamma drift, it may be useful to use a modified gamma curve. In this case, it makes sense to measure the grayscale before using a correction curve.
But even without Gammadrift it may be that, for example, gamma 2.30 likes better than 2.20 or 2.40.

The package contains the following gamma curves, each in the file format for the Sony ImageDirector:
SDR Gamma 2.25
SDR Gamma 2.30
SDR Gamma 2.35
SDR Gamma 2.45
SDR Gamma 2.50
SDR Gamma 2.55
The curves were calculated with an application by me to create gamma curves in 10-bit resolution.

Here is the link to the package and instructions:

https://www.magentacloud.de/lnk/wNvPN4qZ

In the bottom line of the mask you can switch from German to English language.
Please click on the arrow under the word "Herunterladen/ Download" in the mask.

Maybe one or the other can use something like that.
Peter
BakeApples and WildBoar like this.

S/W: LightSpace CMS, Calman 5, HCFR, Colorfacts
V/P: Lumagen Radiance Pro, DVDO AVlab TPG
Meters: JETI Spectraval 1501, Klein K-10A, I1Pro2, I1D3
OMARDRIS is offline  
Sponsored Links
Advertisement
 
post #2 of 10 Old 12-07-2017, 03:25 AM
AVS Forum Special Member
 
rwestley's Avatar
 
Join Date: Mar 2004
Posts: 7,184
Mentioned: 2 Post(s)
Tagged: 0 Thread(s)
Quoted: 459 Post(s)
Liked: 297
Thanks for the hard work. It will be really appreciated. Wondering if there is any plan to do curves for 3D?
rwestley is offline  
post #3 of 10 Old 12-07-2017, 06:40 AM
Advanced Member
 
jqmn's Avatar
 
Join Date: Apr 2005
Location: Houston, TX
Posts: 787
Mentioned: 6 Post(s)
Tagged: 0 Thread(s)
Quoted: 428 Post(s)
Liked: 155
Quote:
Originally Posted by OMARDRIS View Post
Hello @All ,
the selection of SDR gamma curves on the Sony projectors is very modest just around the Gamma 2.2. In addition, sometimes the Sonys have to fight with a light Gammadrift.
Since not everyone wants to do manual gamma curves with Projector Calibration Pro or the ImageDirector, I'll just make some curves available,
Maybe one or the other can use something like that.
Peter
Peter, thanks for making this available. Do you know whether Calibration Pro can read Image Director Files? If not, is there an issue with uploading one of these files and then pulling it down in Calibration Pro? Thanks.
jqmn is offline  
Sponsored Links
Advertisement
 
post #4 of 10 Old 12-07-2017, 10:21 AM - Thread Starter
Member
 
OMARDRIS's Avatar
 
Join Date: Jul 2007
Location: Germany
Posts: 117
Mentioned: 4 Post(s)
Tagged: 0 Thread(s)
Quoted: 76 Post(s)
Liked: 128
Hi,
Calibration Pro can not process files from ImageDirector.
Calibration Pro has only 64 points for the gamma curve. The ImageDirector has 1024, so it's much more accurate.
You can see clearly in the ImageDirector when a curve has been loaded by Calibration Pro. This is then edged. That's why I use the ImageDirector, even though it's the older program.
Peter

S/W: LightSpace CMS, Calman 5, HCFR, Colorfacts
V/P: Lumagen Radiance Pro, DVDO AVlab TPG
Meters: JETI Spectraval 1501, Klein K-10A, I1Pro2, I1D3
OMARDRIS is offline  
post #5 of 10 Old 12-07-2017, 10:51 AM
Advanced Member
 
jqmn's Avatar
 
Join Date: Apr 2005
Location: Houston, TX
Posts: 787
Mentioned: 6 Post(s)
Tagged: 0 Thread(s)
Quoted: 428 Post(s)
Liked: 155
Thanks for this info. I had been using Calibration Pro so I will take a look at ID. I have both but for some reason used CP out of the chute (maybe because all the other tools in CP are so easy to use).
jqmn is offline  
post #6 of 10 Old 12-07-2017, 08:27 PM
Senior Member
 
tangcoma's Avatar
 
Join Date: Jan 2010
Location: Hong Kong
Posts: 313
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 65 Post(s)
Liked: 33
Quote:
Originally Posted by rwestley View Post
Thanks for the hard work. It will be really appreciated. Wondering if there is any plan to do curves for 3D?
Yup , a additional gamma curves for 3D is appreciated! Thx
tangcoma is offline  
post #7 of 10 Old 12-09-2017, 01:15 PM
Member
 
Join Date: Mar 2017
Posts: 30
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 21 Post(s)
Liked: 3
But are they good to test with the hw55es?
Thanks
lucama is offline  
post #8 of 10 Old 12-09-2017, 01:20 PM
AVS Forum Special Member
 
TheBrandon's Avatar
 
Join Date: Jun 2007
Posts: 1,573
Mentioned: 7 Post(s)
Tagged: 0 Thread(s)
Quoted: 555 Post(s)
Liked: 220
Quote:
Originally Posted by OMARDRIS View Post
Hello @All ,
the selection of SDR gamma curves on the Sony projectors is very modest just around the Gamma 2.2. In addition, sometimes the Sonys have to fight with a light Gammadrift.
Since not everyone wants to do manual gamma curves with Projector Calibration Pro or the ImageDirector, I'll just make some curves available, which might help in some cases.
The "Custom SDR Forums Edition" includes 6 new gamma presets and complements the standard gamma curves (1.8 / 2.0 / 2.1 / 2.2 / 2.4 / 2.6) of Sony projectors to case by case to choose a better fitting gamma curve. Especially in connection with a slight gamma drift, it may be useful to use a modified gamma curve. In this case, it makes sense to measure the grayscale before using a correction curve.
But even without Gammadrift it may be that, for example, gamma 2.30 likes better than 2.20 or 2.40.

The package contains the following gamma curves, each in the file format for the Sony ImageDirector:
SDR Gamma 2.25
SDR Gamma 2.30
SDR Gamma 2.35
SDR Gamma 2.45
SDR Gamma 2.50
SDR Gamma 2.55
The curves were calculated with an application by me to create gamma curves in 10-bit resolution.

Here is the link to the package and instructions:

https://www.magentacloud.de/lnk/wNvPN4qZ

In the bottom line of the mask you can switch from German to English language.
Please click on the arrow under the word "Herunterladen/ Download" in the mask.

Maybe one or the other can use something like that.
Peter
Is it possible to use a custom gamma curve for the Game Mode? Mainly I would like something like Gamma 10 brightness I am seeing for user but to automatically turn on or off depending on HDR signal on Game Mode.
TheBrandon is offline  
post #9 of 10 Old 09-12-2019, 01:08 AM
Senior Member
 
tangcoma's Avatar
 
Join Date: Jan 2010
Location: Hong Kong
Posts: 313
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 65 Post(s)
Liked: 33
Quote:
Originally Posted by jqmn View Post
Thanks for this info. I had been using Calibration Pro so I will take a look at ID. I have both but for some reason used CP out of the chute (maybe because all the other tools in CP are so easy to use).
Can u share the Projector Calibration Pro Software to me ? Really appreciated if u can do the help !
tangcoma is offline  
post #10 of 10 Old 09-12-2019, 06:07 AM
AVS Forum Special Member
 
rwestley's Avatar
 
Join Date: Mar 2004
Posts: 7,184
Mentioned: 2 Post(s)
Tagged: 0 Thread(s)
Quoted: 459 Post(s)
Liked: 297
The original versions of the curves had additional settings that had to be set first per instructions.
Should one use those same settings with these curves?
rwestley is offline  
Sponsored Links
Advertisement
 
Reply Digital Hi-End Projectors - $3,000+ USD MSRP

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