Difference between eliminating color clipping via contrast control vs. color control - 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: 
 
Thread Tools
Old 04-19-2013, 07:10 PM - Thread Starter
AVS Addicted Member
 
PlasmaPZ80U's Avatar
 
Join Date: Feb 2009
Posts: 10,841
Mentioned: 10 Post(s)
Tagged: 0 Thread(s)
Quoted: 1724 Post(s)
Liked: 500
When using color clipping patterns like the ones on the AVSHD709 disc and also the GCD disc, I've noticed color clipping can be eliminated/reduced by either lowering 'contrast' or 'color'.

My question is the following: if I see no clipping or discoloration on a white clipping pattern and the dynamic range tool in CalMAN5 shows no clipping in any channel but I do see color clipping on a pattern that shows shades of RGBCMY near digital 235, can I use the color control to fix this instead of the contrast control? Reducing either setting will fix the issue but what are the pros and cons to each means of eliminating the color clipping? Does each control (contrast, color) affect color clipping in a unique way? Or do they both do the exact same thing in this case?

UN46EH6030 Calibration/Settings
Samsung UN46EH6030; Yamaha HTR-3066, SVS Prime Bookshelf Mains and Prime Center, Rythmik LV12R; PS4, Xbox One, Motorola RNG150N
PlasmaPZ80U is online now  
Sponsored Links
Advertisement
 
Old 04-19-2013, 09:29 PM
AVS Special Member
 
sotti's Avatar
 
Join Date: Aug 2004
Location: Seattle, WA
Posts: 7,093
Mentioned: 7 Post(s)
Tagged: 1 Thread(s)
Quoted: 321 Post(s)
Liked: 322
Contrast does one job,
Color does a different job.

You want red, green, blue and white to track the same.

The contrast control typically moves white, red, green, and blue together.
The color control typically moves red, green, blue relative to white.

The best way to analyze which control to tweak would be to look at gamut luminance.

Joel Barsotti
SpectraCal
CalMAN Lead Developer
sotti is offline  
Old 04-20-2013, 09:34 AM - Thread Starter
AVS Addicted Member
 
PlasmaPZ80U's Avatar
 
Join Date: Feb 2009
Posts: 10,841
Mentioned: 10 Post(s)
Tagged: 0 Thread(s)
Quoted: 1724 Post(s)
Liked: 500
Quote:
Originally Posted by sotti View Post

Contrast does one job,
Color does a different job.

You want red, green, blue and white to track the same.

The contrast control typically moves white, red, green, and blue together.
The color control typically moves red, green, blue relative to white.

The best way to analyze which control to tweak would be to look at gamut luminance.

thanks, that makes sense

UN46EH6030 Calibration/Settings
Samsung UN46EH6030; Yamaha HTR-3066, SVS Prime Bookshelf Mains and Prime Center, Rythmik LV12R; PS4, Xbox One, Motorola RNG150N
PlasmaPZ80U is online now  
Sponsored Links
Advertisement
 
 
Thread Tools


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