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Discussion Starter · #1 ·

ISFNightGrimsrud2.pdf 620k .pdf fileQuestion 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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That sounds like black crushing and possibly a gamma issue, if you post your report it might be helpful
 

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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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Discussion Starter · #7 ·
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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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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Discussion Starter · #9 ·
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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Discussion Starter · #10 ·
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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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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Discussion Starter · #12 ·
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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Quote:
Originally Posted by grimsrue  /t/1524717/zt60-too-dark-or-over-saturated/0_50#post_24541474

ISFNightGrimsrud2.pdf 620k .pdf fileQuestion 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?
 

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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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Quote:
Originally Posted by grimsrue  /t/1524717/zt60-too-dark-or-over-saturated/0_50#post_24544977


Hey Robnix, Black setting is set to light.

Just checking, that's where it should be.


Hope you can get this resolved
 

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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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Quote:
Originally Posted by improwise  /t/1524717/zt60-too-dark-or-over-saturated/0_50#post_24545506


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.
 

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Quote:
Originally Posted by robnix  /t/1524717/zt60-too-dark-or-over-saturated#post_24545696


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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