The Official ChromaPure thread - Page 239 - AVS Forum | Home Theater Discussions And Reviews
Baselworld is only a few weeks away. Getting the latest news is easy, Click Here for info on how to join the Watchuseek.com newsletter list. Follow our team for updates featuring event coverage, new product unveilings, watch industry news & more!



Forum Jump: 
 243Likes
Reply
Thread Tools
post #7141 of 7147 Unread 08-19-2016, 09:32 AM
Member
 
hollisavrct's Avatar
 
Join Date: Jan 2014
Posts: 43
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 32 Post(s)
Liked: 10
Cp3.1

Hay Tom anything yet on CP3.1 and the Accupel yet

Thanks
Hollisav
hollisavrct is offline  
Sponsored Links
Advertisement
 
post #7142 of 7147 Unread 08-21-2016, 02:20 AM
AVS Special Member
 
TomHuffman's Avatar
 
Join Date: Jan 2003
Location: Springfield, MO
Posts: 7,279
Mentioned: 12 Post(s)
Tagged: 0 Thread(s)
Quoted: 589 Post(s)
Liked: 541
Quote:
Originally Posted by hollisavrct View Post
Hay Tom anything yet on CP3.1 and the Accupel yet

Thanks
Hollisav
Both are close.

Tom Huffman
ChromaPure Software/AccuPel Video Signal Generators
ISF/THX Calibrations
Springfield, MO

TomHuffman is online now  
post #7143 of 7147 Unread Yesterday, 01:14 AM
Member
 
chhanthony's Avatar
 
Join Date: Oct 2008
Posts: 71
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 32 Post(s)
Liked: 23
Quote:
Originally Posted by TomHuffman View Post
Both are close.
Yeah!!!....Thank you Tom!

Anthony Chan
chhanthony is offline  
post #7144 of 7147 Unread Today, 07:28 AM
AVS Special Member
 
Join Date: Dec 2014
Location: Mississauga, ON, Canada
Posts: 1,401
Mentioned: 6 Post(s)
Tagged: 0 Thread(s)
Quoted: 808 Post(s)
Liked: 146
Quote:
Originally Posted by TomHuffman View Post
Test the available options and then use what works best.
It's easy enough to try different options, but how does a user, in particular a novice one, decide which result is the "best" (most accurate, in this context)?

Last edited by Dominic Chan; Today at 07:31 AM.
Dominic Chan is online now  
post #7145 of 7147 Unread Today, 08:03 AM
AVS Special Member
 
TomHuffman's Avatar
 
Join Date: Jan 2003
Location: Springfield, MO
Posts: 7,279
Mentioned: 12 Post(s)
Tagged: 0 Thread(s)
Quoted: 589 Post(s)
Liked: 541
Quote:
Originally Posted by Dominic Chan View Post
It's easy enough to try different options, but how does a user, in particular a novice one, decide which result is the "best" (most accurate, in this context)?
I am not sure that I understand your question. Calibration software and a good meter will SHOW YOU which is best.

If you are looking at white balance, then whichever setting gets you closest to R100%, G100%, B100% or x0.3127, y0.329 or dE < 2.0 is, by definition, the "best."

If you are looking at color, then whichever setting produces the lowest average dE is, by definition, the best.

If you are looking at gamma, then whatever setting gets you the closest to the target gamma (2.22, for simplicity's sake) is, by definition, the best.

None of this requires any special expertise, beyond a rudimentary understanding of what white balance, color accuracy, and gamma mean. Even a novice can determine this right off the bat.

Tom Huffman
ChromaPure Software/AccuPel Video Signal Generators
ISF/THX Calibrations
Springfield, MO

TomHuffman is online now  
post #7146 of 7147 Unread Today, 08:33 AM
AVS Special Member
 
Join Date: Dec 2014
Location: Mississauga, ON, Canada
Posts: 1,401
Mentioned: 6 Post(s)
Tagged: 0 Thread(s)
Quoted: 808 Post(s)
Liked: 146
Quote:
Originally Posted by TomHuffman View Post
None of this requires any special expertise, beyond a rudimentary understanding of what white balance, color accuracy, and gamma mean. Even a novice can determine this right off the bat.
I was referring to the part regarding "What is the best pattern size to use, 10% windowed, 6.5% windowed or 10% APL?"

The different settings will theoretically all give you the correct gamma when displaying the respective test pattern, as calibration is a "closed loop" system with the adjustments being made to achieve the correct white balance and luminance for each pattern.

However, my understanding that some TVs (e.g., plasma) may respond differently to actual program material, depending on the test pattern used during calibration.
Dominic Chan is online now  
post #7147 of 7147 Unread Today, 11:59 AM
AVS Special Member
 
TomHuffman's Avatar
 
Join Date: Jan 2003
Location: Springfield, MO
Posts: 7,279
Mentioned: 12 Post(s)
Tagged: 0 Thread(s)
Quoted: 589 Post(s)
Liked: 541
Quote:
Originally Posted by Dominic Chan View Post
I was referring to the part regarding "What is the best pattern size to use, 10% windowed, 6.5% windowed or 10% APL?"

The different settings will theoretically all give you the correct gamma when displaying the respective test pattern, as calibration is a "closed loop" system with the adjustments being made to achieve the correct white balance and luminance for each pattern.

However, my understanding that some TVs (e.g., plasma) may respond differently to actual program material, depending on the test pattern used during calibration.
I don't think that there is any correct answer to this question. The only thing I would look at is which provides the most linear gamma response. This is one of those issues where the differences are very, very small that I think get a little more attention than they deserve. What is critical is that windows are used on plasma and OLED.

BTW, I did notice that some OLEDs may respond better with a 10% window than with a 5% window. The reason is that LG OLEDs will start to dim if it senses a static image on the screen. Changes in color and intensity are not a large enough change in overall APL for the TV to detect change, but with a 10% window this is not a problem. This is why I suggested starting with a 10% as the safest choice.

Tom Huffman
ChromaPure Software/AccuPel Video Signal Generators
ISF/THX Calibrations
Springfield, MO

TomHuffman is online now  
Sponsored Links
Advertisement
 
Reply Display Calibration



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