AVS › AVS Forum › Display Devices › Display Calibration › Chad B's custom test patterns
New Posts  All Forums:Forum Nav:

Chad B's custom test patterns - Page 3

post #61 of 165
2/10/13 at 11:35am
Thread Starter 
Yes, that is good for PN-D series.
Just be careful not to get in a vicious cycle between the brightness control and interval 1 of the 10 pt adjustment.
Reply
Reply

AVS Top Picks

post #62 of 165
2/12/13 at 10:02am
Quote:
Originally Posted by Chad B View Post

Yes, that is good for PN-D series.
Just be careful not to get in a vicious cycle between the brightness control and interval 1 of the 10 pt adjustment.

Can you explain this better , what do you mean exactly? Please give an example.
Reply
Reply
post #63 of 165
2/12/13 at 10:19am
Quote:
Originally Posted by hungro View Post

Can you explain this better , what do you mean exactly? Please give an example.
If you raise, or lower the values of interval 1, in the 10pt adjustment. You have to go back and adjust the brightness...in some cases. I've dealt with this on my own Samsung. I try and leave 10% alone, or do very minimal adjustment. Otherwise you'll have to keep going back and forth between adjustments. I think this is what Chad is talking about. If not, Chad, please correct me.
Reply
Reply
post #64 of 165
2/14/13 at 4:42am
I understand the idea of using a 4% pattern to avoid having the ABL circuit from affecting your gamma readings but does it do anything for color?

I think I may have figured out my own answer. Color patterns include lumanance which is basically how bright a color is. If you're you're using 100% intensity patterns, you run a chance of having the ABL circuit dim the pattern causing you to compensate by increasing the lumanace element of the color being adjusted. Therefore, you overcorrect and wind up with cartoonish color.

Am I even close?
.
Edited by JimP - 2/14/13 at 4:49am
Reply
Reply
post #65 of 165
2/14/13 at 2:48pm
Quote:
Originally Posted by JimP View Post

I understand the idea of using a 4% pattern to avoid having the ABL circuit from affecting your gamma readings but does it do anything for color?

I think I may have figured out my own answer. Color patterns include lumanance which is basically how bright a color is. If you're you're using 100% intensity patterns, you run a chance of having the ABL circuit dim the pattern causing you to compensate by increasing the lumanace element of the color being adjusted. Therefore, you overcorrect and wind up with cartoonish color.

Am I even close?
.

I think this is why when calibrating colour you generally use 75 or 50% lum patterns.

Personally, i try to only use the CMS to ensure i hit the correct gamut points, then revert to saturation patterns to dial the colours in, usually with a compromise. Then final check with colour checker patterns to minimise the dE. Ive been using really small 1% patterns recently with really good looking results, but im gonna try APL patterns with a constant background between 20-30% when i get a few hours spare.
Reply
Reply
post #66 of 165
2/17/13 at 6:03am
Quote:
Originally Posted by ndaa75 View Post

I think this is why when calibrating colour you generally use 75 or 50% lum patterns.

Personally, i try to only use the CMS to ensure i hit the correct gamut points, then revert to saturation patterns to dial the colours in, usually with a compromise. Then final check with colour checker patterns to minimise the dE. Ive been using really small 1% patterns recently with really good looking results, but im gonna try APL patterns with a constant background between 20-30% when i get a few hours spare.

For the samsung d series of plasmas it is generally recommended to use 75% amplitude /75%s saturation patterns to calibrate color with . With these patterns 100 % saturation will be over saturated but most of the colors on programming material never reach that point it's better to compromise and calbrate to 75/75 which will make your gamut track better at 50% and 25% saturation as apposed to using 75%amplitude/100% saturation.
Reply
Reply
post #67 of 165
2/17/13 at 11:00am
Quote:
Originally Posted by hungro View Post

For the samsung d series of plasmas it is generally recommended to use 75% amplitude /75%s saturation patterns to calibrate color with . With these patterns 100 % saturation will be over saturated but most of the colors on programming material never reach that point it's better to compromise and calbrate to 75/75 which will make your gamut track better at 50% and 25% saturation as apposed to using 75%amplitude/100% saturation.

I cant recall what method i used on my D8000 plasma, but on my Panasonic the method i described above works well although the 100% wlill be off given the focus is on the 25-75% range. Using the colour checker patterns as a final check is a great way to confirm how youve done.
Reply
Reply
post #68 of 165
3/12/13 at 7:57pm
Chad, are these patterns 0-255 or 16-235 levels? Reason I ask is the brightness pattern does not agree with with the dpg2000 brightness pattern nor does it agree with the 709 from BR. I have not tried to display you pattern using a thumb drive and the BR player.. will see if that makes any difference. The DPG2000 is really flaky with output levels so it would not surprise me if the player was the problem.
Thanks!
Reply
Reply
post #69 of 165
3/13/13 at 6:28am
Thread Starter 
They are done at video levels: 16-235. The WTW bar in the Contrast pattern is at 245. Going by what I remember with my older DPG models, I believe you would want to set the DPG-2000 to RGB Full, but I don't have your model DPG.
Reply
Reply
post #70 of 165
3/13/13 at 6:37am
RGB High is the correct setting for the DPG-2000. The patterns in the DPG-2000 have matched the disks and generators I have compared it to. The only exception to this I have found is when the DPG-2000 is connected to an iScan Duo. Then the patterns are off but I have not checked out why.
Reply
Reply
post #71 of 165
3/13/13 at 7:01am
Quote:
Originally Posted by praz View Post

RGB High is the correct setting for the DPG-2000. The patterns in the DPG-2000 have matched the disks and generators I have compared it to. The only exception to this I have found is when the DPG-2000 is connected to an iScan Duo. Then the patterns are off but I have not checked out why.

That is how I have it set. I will do some more comparisons tomorrow night when the wife is out. I wish Spectracal would get the known level issue with the DPG fixed as I do not trust it at all now.
Reply
Reply
post #72 of 165
3/13/13 at 12:44pm
Quote:
Originally Posted by ndaa75 View Post

I think this is why when calibrating colour you generally use 75 or 50% lum patterns.

Personally, i try to only use the CMS to ensure i hit the correct gamut points, then revert to saturation patterns to dial the colours in, usually with a compromise. Then final check with colour checker patterns to minimise the dE. Ive been using really small 1% patterns recently with really good looking results, but im gonna try APL patterns with a constant background between 20-30% when i get a few hours spare.

Have you tried Chad B's patterns? how is it compare to your 1 % patterns? Visually.
Reply
Reply
post #73 of 165
3/13/13 at 12:46pm
I like the sharpness pattern on this set of custom patterns since it offers black single pixel lines with gray backgrounds to make EE easily visible (white halo around the black lines). However, if I use this pattern and display it as a PNG on my PS3's XMB (main menu), will that give me the same results as MP4 video on the PS3's XMB or better yet AVCHD format burned to a DVD?

The XMB is RGB only while AVCHD video is played in YCbCr 4:4:4 on the PS3 (just like a BD).
Reply
Reply
post #74 of 165
3/13/13 at 4:42pm
Just wondering if someone who owns the appropriate software could possibly build an AVCHD ISO image with a simple menu for these patterns, it would be much appreciated. Or post links to the needed freeware and instructions and I would be happy to do it.

Thanks!
Reply
Reply
post #75 of 165
3/13/13 at 7:08pm
I've done just that. It's 220mb in size. If you have somewhere to upload it, I'll send it. I used multiAVCHD to author it.
Reply
Reply
post #76 of 165
3/13/13 at 7:41pm
Quote:
Originally Posted by vega509 View Post

I've done just that. It's 220mb in size. If you have somewhere to upload it, I'll send it. I used multiAVCHD to author it.

Could you put in zip so we can get it,if you dont mind.I would like a avchd version as well.Thanks Vega509.
Reply
Reply
post #77 of 165
3/13/13 at 7:49pm
Quote:
Originally Posted by vega509 View Post

I've done just that. It's 220mb in size. If you have somewhere to upload it, I'll send it. I used multiAVCHD to author it.

I will set something up tomorrow and PM you when it is ready. After I get it, I will put it on my webservers and post a link so it can be pulled down by whomever wants it.
Thanks!
Reply
Reply
post #78 of 165
3/14/13 at 8:38am
Vega509, you have a PM!
Reply
Reply
post #79 of 165
3/14/13 at 9:10am
Quote:
Originally Posted by airscapes View Post

Vega509, you have a PM!

the upload is complete, let me know if you have any problems.
Reply
Reply
post #80 of 165
3/14/13 at 9:51am
Quote:
Originally Posted by vega509 View Post

the upload is complete, let me know if you have any problems.

How about posting a link?
Reply
Reply
post #81 of 165
3/14/13 at 10:20am
Hey Chad, can you post this link on the first post of this thread as well so it does not get lost.

LINK TO AVCHD ISO image of Chad's Patterns thanks to Vega509
Edited by airscapes - 3/14/13 at 10:31am
Reply
Reply
post #82 of 165
3/14/13 at 10:20am
Quote:
Originally Posted by gtgray View Post

How about posting a link?

I do not have a web server available, Doug said in a previous post he will post a link once he has confirmed the iso works.
Reply
Reply
post #83 of 165
3/14/13 at 10:26am
Thread Starter 
I made 75% sat / 75% level APL gamut patterns. Along with other displays, they should be useful for Mits DLP RPTVs, some of which have an undefeatable dynamic iris.

aplReducedSaturation.zip 105k .zip file
Reply
Reply
post #84 of 165
3/14/13 at 10:31am
Quote:
Originally Posted by vega509 View Post

I do not have a web server available, Doug said in a previous post he will post a link once he has confirmed the iso works.

HA! Just posted the link to the ISO up a couple of posts and Chad just posted more patterns! Tony you think you can update the ISO and let me know so you can upload the new one?
Thanks so much everyone!
Reply
Reply
post #85 of 165
3/14/13 at 10:38am
Thread Starter 
Might want to wait just a bit... I'll make some reduced saturation non-APL windows.

Done. First post is updated.
Edited by Chad B - 3/14/13 at 10:53am
Reply
Reply
post #86 of 165
3/14/13 at 11:53am
DrFaxe had posted these patterns in mp4 format which is what I used to create the avchd disc. The png patterns changed somehow when I tried to create the disc. If Chad or DrFaxe can post the files in mp4 format I will re-author the disc with the new patterns.
Reply
Reply
post #87 of 165
3/14/13 at 1:07pm
Can game mode ever be calibrated correctly?
Reply
Reply
post #88 of 165
3/14/13 at 1:23pm
Thread Starter 
Quote:
Originally Posted by JukeBox360 View Post

Can game mode ever be calibrated correctly?

Depends on the TV. Sharps like the 632U can, but only if done in the service menu, which is no simple task.
Reply
Reply
post #89 of 165
3/14/13 at 2:46pm
Quote:
Originally Posted by Chad B View Post

Depends on the TV. Sharps like the 632U can, but only if done in the service menu, which is no simple task.
Would a GT50 have the ability to be calibrated correctly? I've always wanted a calibration done but would find it pointless to doing I couldn't get it done in game mode as well. I'm a huge gamer.
Reply
Reply
post #90 of 165
3/14/13 at 3:34pm
Quote:
Originally Posted by vega509 View Post

DrFaxe had posted these patterns in mp4 format which is what I used to create the avchd disc. The png patterns changed somehow when I tried to create the disc. If Chad or DrFaxe can post the files in mp4 format I will re-author the disc with the new patterns.

I just burned the iso,are you saying the levels are off and the said iso is not proper for calibration?
Reply
Reply
New Posts  All Forums:Forum Nav:
  Return Home
  Back to Forum: Display Calibration

AVS Top Picks

AVS › AVS Forum › Display Devices › Display Calibration › Chad B's custom test patterns