Brightness question when using calibration disc - AVS Forum
Forum Jump: 
 
Thread Tools
post #1 of 5 Old 06-15-2013, 11:55 PM - Thread Starter
Member
 
Villagepeople's Avatar
 
Join Date: Jan 2010
Posts: 61
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 10
Hey guys I have a question about brightness, i hope someone can help me. When I press the start button when playing a videogame or when there is a dark screen, like when channels are not available, I have noticed that rising brightness above 45 makes the screen's black color a little gray. However, it stays dark, and not gray, if I keep brightness at 45 or lower (it keeps the same brightness level from 45 and below).

I bought Disney's WOW calibration disc some months ago and when calibrating the screen it gives me a brightness of 47. It has a pattern where there are stars on a black background and some stars must be visible and some not visible.
Well, if I keep brightness at 45, the star that should be "in the verge of being visible" is totally not visible. By rising brightness level at 47, that star is barely visible, which I think that is what it means by "in the verge of being visible"? (the disc does not explain that well).

My question is, do I keep brightness at 47 even though it makes blacks a little gray or do I keep it at 45?

My TV is an already old Samsung LN46B650 model.

Thank you!
Villagepeople is offline  
Sponsored Links
Advertisement
 
post #2 of 5 Old 06-16-2013, 07:54 AM
Advanced Member
 
hungro's Avatar
 
Join Date: Mar 2007
Posts: 587
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 10 Post(s)
Liked: 52
I tthink that it is more correct at 47, barely visible is what was mentioned at the 2013 HDTV Shootout. There is a clip on you tube from the shoootout called Contrast Ratio watch it and it talks about setting up black level using the Disney Wow disk. Barely visible is what they shot for,the professionals .

http://www.youtube.com/watch?v=NMD8cy3SuOI

Start watching at around the 13 minute mark.

Disney Wow which is for Blu-ray is one "source" games is another source and you would have to set up brightness using your Disney Wow disk playing through your game console. Each source has to be set up seperately, they will all have different brightness values. Your best source obviously is blu-ray .
hungro is online now  
post #3 of 5 Old 06-16-2013, 08:19 AM
AVS Special Member
 
Michael TLV's Avatar
 
Join Date: Feb 2000
Location: THX/ISF Calibrationist/Instructor, Calgary, AB, Canada
Posts: 6,729
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 10 Post(s)
Liked: 116
Greetings

The brightness setting might be right for that video game ... but the problem is that most video games are not created based on any standard as opposed to films and tv shows that do follow a standard.

The WOW disc would be preferred ... as long as you follow the instructions correctly. You wouldn't believe how many people say they can follow instructions and can't when it comes to these discs. At least 50% will get it wrong. (Problem is .. they all say they got it right ...)

Regards

Michael Chen @ The Laser Video Experience
ISF/THX/TLV Video Instructor
The Video Calibration Education Hub - www.TLVEXP.com

Michael TLV is offline  
post #4 of 5 Old 06-16-2013, 10:03 AM
AVS Special Member
 
PlasmaPZ80U's Avatar
 
Join Date: Feb 2009
Posts: 7,057
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 12 Post(s)
Liked: 187
it's a good idea to set your TV to the correct setting on the Disney WOW disc (or other calibration/setup disc) and then use the in-game brightness setting for individual games if needed... this way you don't screw the brightness setting for video content like DVD/BD just to make one game look right
PlasmaPZ80U is offline  
post #5 of 5 Old 06-17-2013, 01:18 PM
AVS Special Member
 
Doug Blackburn's Avatar
 
Join Date: May 2008
Location: San Francisco - East Bay area
Posts: 3,453
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 19 Post(s)
Liked: 222
Uh... allow me to state the obvious here...

If you are worried that 45 is a little too dark and 47 might be a little too bright... why aren't you using a setting of 46 and just forget about it?

If you really want a good Brightness test pattern, you need one with digital levels from 0-25 or so. 16 and lower should all be black, the same darkness of black. 17 should be just barely visible, but some displays get too bright when you set Brightness 1 click higher and you can distinctly see step 16... that is 1 click too bright for the Brightness control.

I believe one of the free discs you can download from AVS and burn on your computer has a Brightness pattern like that. The test/setup discs like WOW often have levels displayed in % rather than digital where each % is a little more than 2 digital steps. So if the setup disc is using 2% differences, that's more than 4 digital steps which is a pretty big difference. Using single digital steps tells you more about what the TV is doing.

"Movies is magic..." Van Dyke Parks
THX Certified Professional Video Calibration
ISF -- HAA -- www.dBtheatrical.com
Widescreen Review -- Home Theater & Sound
Doug Blackburn is offline  
Reply Display Calibration

User Tag List

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