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TCL S405 4K picture quality

by mcnairj09 / December 4, 2017 11:31 AM PST

I recently purchased the TCL 4K S405 tv. Bought it online after good reviews but never saw the picture quality in a store. Many boasted on how great the picture quality was. I currently have a Samsung UN50H6350AF which I loved the picture quality. I have hooked up the TCL tv with an HDMI cable. Have direct tv with resolution set at 1080i. Went through the best settings on the TCL but the picture is horrible! Doesn't even resemble the clarity of my Samsung. The sharpness doesn't resemble 1080. It appears to be equal to 480p.

Looking for help to see if this TCL 4K picture quality should be at least equal to my Samsung that I had. Any help would be greatly appreciated.

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I think they mean
by R. Proffitt Forum moderator / December 4, 2017 11:46 AM PST

For the money it's great. You can find reviews that dive into color gamut to see if reviews spell it out but my bone to pick is the many UHD 4K Black Friday models with HDR and a spat of complaints about HDR on same. That is in the reviews already.

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PS. I forgot to add
by R. Proffitt Forum moderator / December 4, 2017 11:47 AM PST
In reply to: I think they mean

That the quality of the UPSCALING is also at play here.

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Thought about it more. KEEP AN EYE ON THIS.
by R. Proffitt Forum moderator / December 4, 2017 4:07 PM PST
In reply to: I think they mean

Find TCL's support page and look for firmware updates. 1080 upconversion is definitely in play here. See if they update and try that.

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Problem is that...
by Pepe7 / December 4, 2017 5:32 PM PST

...the name brand HDTVs excel at features such as upscaling, black levels and color accuracy. You do get Roku built into the TCL at the expense of almost everything else Sad

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Not only that but it's 1080i
by R. Proffitt Forum moderator / December 4, 2017 5:38 PM PST
In reply to: Problem is that...

Which presents even more issues on upconversion. My thoughts is that we don't want to leave a stone unturned.

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That won't be an issue
by Pepe7 / December 5, 2017 10:56 AM PST

Upscaling the same number of pixels is still upscaling. If it handles the 1080p poorly, it will handle the 1080i poorly.

Or are you getting at potentially crappy de-interlacing(?)


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Interlaced upscaling is well, harder.
by R. Proffitt Forum moderator / December 5, 2017 11:05 AM PST
In reply to: That won't be an issue

There's so much wrong with interlaced video that I'm just going to call it out as carp.

The deinterlace is one thing but upscaling 1080i or any of the i video formats can cause the firmware "quality" to show that it needs work.

There's a lot about this out there, and my last thought is the buyer didn't know what they were buying (discount models) so I wanted to give them one last thing to watch out for.

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by mcnairj09 / December 5, 2017 12:39 PM PST

I have also talked to a geek squad guy and he asked if it was "cloudy" or "muddy" like. I said yes. He felt that the upscaling was the biggest factor. I watch normally sports and regular 1080 tv programing. He said if it's just regular tv viewing the upscaling isn't great on this tv but it won't upscale to 100% 1080 on a 4k tv. He felt even a top of the line 4k tv doesn't upscale 100%. Unless I was viewing majority of 4k programming it won't be as good as a good 1080 led hd tv.

Do you agree with that?

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Upscaling is a bottomless pit discussion.
by R. Proffitt Forum moderator / December 5, 2017 12:56 PM PST
In reply to: upscaling

Some are better than others and if the person asking wants 1080 upscale to mean it is UHD quality, you walk away since they need to think and read more.

1080p with simple methods upscales to UHD. But if the screen is large or the user too close then you have to dither (1st order upscale trick) and then there are more tricks.

But for 1080 on average size set with the user at 4+ feet away, they can't see it unless they have 20/10 vision.

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by mcnairj09 / December 5, 2017 1:55 PM PST

Thanks for all of your insight btw

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by mcnairj09 / December 5, 2017 2:31 PM PST
In reply to: That won't be an issue

I watch directv and it is only sending out 1080i but not 1080p. So I think that is another reason

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Just dawned on me. Forgot a trick.
by R. Proffitt Forum moderator / December 5, 2017 3:34 PM PST
In reply to: 1080i

See if your receiver can output 720p. Counter-intuitive but worth a try.

Post was last edited on December 6, 2017 8:22 AM PST

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by Pepe7 / December 6, 2017 6:43 AM PST
In reply to: 1080i

DirecTV 1080i feeds can look stellar.

It’s the crappy hdtv that’s the issue.

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It's like they bought
by R. Proffitt Forum moderator / December 6, 2017 8:23 AM PST
In reply to: No

A Yugo, Le Car or some Lada's then compared it to a good car.

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Price appropriate
by Pepe7 / December 4, 2017 11:49 AM PST

Understand, you are comparing a name brand display with a budget brand. There's quite often little comparison, even without professionally calibrating that 3-4 year old Samsung model (which needs it, btw).

Make sure you stick with reputable review sites only. The TCL models are typically lukewarm in the PQ department, but high in the 'best price' category. YMMV.

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TCL TV review
by Spaceace911 / April 17, 2018 7:33 PM PDT

The TCL TV is a really low end picture quality TV. If your looking for a smaller TV it will pass the basic error test but 50 inch or higher really isn't worth much. Yeah cheaper price point but terrible picture quality even had looks bad. 4k is a joke. Sceptre super cheap 4ktv looked better. Much better. And I returned it because of dead pixels out of the box. But picture war yen times better, sadly. I do not recommend!

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