ZT60 Too Dark or over saturated - AVS Forum
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post #1 of 20 Old 03-28-2014, 12:04 PM - Thread Starter
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ISFNightGrimsrud2.pdf 620k .pdf file Question for the community.

Have any of you heard about or owned a ZT60 where dark scenes are so dark that you can't tell the wall from the person standing in front of it?

I bought my 65" ZT60 on January 2nd of 2014. I have been watching it in THX Cinama for the past few months. I noticed the dark scenes in TV shows movies over U-Verse and through Viera Connect Hulu/Netflix were really really dark. So dark that object and people blend together. Maybe another way to describe it is the absences of shadow detail.

I recently had my ZT 60 calibrated by Charles from Cinetune here in Georgia. He spend 3 hours dialing it in. After the calibration we were both still seeing the same issue with dark scenes through U-Verse, hulu, netflix. At this point I am wondering if there is an issue with the TV itself.

Blueray seems to be better but not by much. I have attached my calibration report that Charles emailed me. On the opposite end, bright scenes look great.
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File Type: pdf ISFNightGrimsrud2.pdf (619.8 KB, 35 views)
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post #2 of 20 Old 03-28-2014, 12:10 PM
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That sounds like black crushing and possibly a gamma issue, if you post your report it might be helpful

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post #3 of 20 Old 03-28-2014, 12:13 PM - Thread Starter
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Give me just a few. My report has all my personal info on it. let me edit that out
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post #4 of 20 Old 03-28-2014, 12:23 PM
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Yes, as chonon said above, this is black crushing and should be able to fix with correct settings.

AVS709 is a useful tool:
http://www.avsforum.com/t/948496/avs-hd-709-blu-ray-mp4-calibration
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post #5 of 20 Old 03-28-2014, 12:55 PM - Thread Starter
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My calibration report has been added to the initial post
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post #6 of 20 Old 03-28-2014, 01:01 PM
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I would say the 2.4 gamma is the culprit

Have you talked to him about what you are seeing ?

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post #7 of 20 Old 03-28-2014, 01:02 PM - Thread Starter
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I did talk to my Calibrator (Charles). He said that he use a new gamma correction call vt1886 or something similar to that. He is not sure off hand if that is causing my issue or not. He is going to come back out to take a look next week.
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post #8 of 20 Old 03-28-2014, 01:11 PM
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Bt1886 does not always look good in my experience depending on the content. Whatever the issue the good news is it can be corrected, up to you but you might want to try a flat 2.3 gamma or one that tails to 2.2 at the lower end . Can I ask what are your viewing conditions total darkness, moderate ambient light ?

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post #9 of 20 Old 03-28-2014, 01:20 PM - Thread Starter
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Most of my TV watching is at night with a single lamp off to the left of me at teh end of the couch. My previous setup was a U-Verse ISB7500 running HDMI to a Pioneer Elite VSX-52 then out to my ZT60. I have recently purchased a XBOX One and I have run the U-Verse receiver to the XBOX one, XBOX one to the VSX-52, then to the ZT60. No improvement with this setup either. I was watching GRIMM last weekend at night. That show is mostly made of of Dark scenes and I am squinting to make out person from the dark back ground.

I did open up a support case with Panasonic to see if it might be a issue with the TV. I have not started the troubleshooting yet. waiting on Charles to swing by and make a copy of the ISF night settings for me just in case Panasonic wipes them out during the troubleshooting process.
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post #10 of 20 Old 03-29-2014, 11:00 AM - Thread Starter
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I have been doing research on BT.1886 and BT.709 and from what I am seeing it sounds like most (99%) of content is released as REC.709, but there is a push to make the studios use BT.1886 for all media in the future. I have emailed my calibrator Charles to see if it is possible to set the ISF Night for REC.709 with a gamma of around 2.2 and then set the ISF DAY for the new BT.1886 standard. I am not sure if this can be done or not, but it would allow me to switch between them based on the media that I am watching at the time.
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post #11 of 20 Old 03-29-2014, 11:06 AM
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Have you fiddled with the brightness control? that is all you have to do to bring back some shadow detail, raise it until you like what you see
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post #12 of 20 Old 03-29-2014, 11:24 AM - Thread Starter
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Hey ChadThunder. Thanks for your recommendation. I have tried messing with the brightness a bit and it is not making much of a difference. Thought my ISF Night and Day setting are locked down by my calibrator. I am having to make adjustments in Custom mode to see if I can clean up the black crush and high contrast. I think converting back to REC.709 with a 2.2 gamma will fix my problem. Just need to wait for my Calibrator to come by next week.
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post #13 of 20 Old 03-29-2014, 11:45 AM
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Quote:
Originally Posted by grimsrue View Post

ISFNightGrimsrud2.pdf 620k .pdf file Question for the community.

Have any of you heard about or owned a ZT60 where dark scenes are so dark that you can't tell the wall from the person standing in front of it?

I bought my 65" ZT60 on January 2nd of 2014. I have been watching it in THX Cinama for the past few months. I noticed the dark scenes in TV shows movies over U-Verse and through Viera Connect Hulu/Netflix were really really dark. So dark that object and people blend together. Maybe another way to describe it is the absences of shadow detail.

I recently had my ZT 60 calibrated by Charles from Cinetune here in Georgia. He spend 3 hours dialing it in. After the calibration we were both still seeing the same issue with dark scenes through U-Verse, hulu, netflix. At this point I am wondering if there is an issue with the TV itself.

Blueray seems to be better but not by much. I have attached my calibration report that Charles emailed me. On the opposite end, bright scenes look great.

This may be a silly question, but under the advanced picture settings, is black level set to light or dark?

Looky here!
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post #14 of 20 Old 03-29-2014, 11:51 AM
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That is a good question robix, I wonder does the ZT have a black extension setting which would make black crush
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post #15 of 20 Old 03-29-2014, 11:55 AM - Thread Starter
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Hey Robnix, Black setting is set to light.
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post #16 of 20 Old 03-29-2014, 12:37 PM
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Quote:
Originally Posted by grimsrue View Post

Hey Robnix, Black setting is set to light.

Just checking, that's where it should be.

Hope you can get this resolved frown.gif

Looky here!
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post #17 of 20 Old 03-29-2014, 02:34 PM
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I dont own a Panasonic-plasma myself so I dont know what the setting might be called in the menu, but have you checked to make sure the HDMI Range is set to what it should be? Unfortunately, this setting probably wouldnt affect apps running on the tv like NetFlix etc.
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post #18 of 20 Old 03-29-2014, 03:30 PM
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Quote:
Originally Posted by improwise View Post

I dont own a Panasonic-plasma myself so I dont know what the setting might be called in the menu, but have you checked to make sure the HDMI Range is set to what it should be? Unfortunately, this setting probably wouldnt affect apps running on the tv like NetFlix etc.

It's the aforementioned Black Setting.

Looky here!
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post #19 of 20 Old 03-30-2014, 06:34 AM
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Quote:
Originally Posted by robnix View Post

It's the aforementioned Black Setting.

Ah, I see. I wondered myself if it could be the same, but the possible values of "light" and "dark" didn't seem relevant to HDMI Range. But never mind, that obviously isn't the problem here.
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post #20 of 20 Old 03-30-2014, 03:39 PM
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Hey grimsrue try cnets setting for zt. They use gamma 2.2. Just to see if helps.

http://forums.cnet.com/7723-19410_102-593204/panasonic-tc-p60zt60-picture-settings/
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