Panasonic 4K 55inch TH55- CX640Z

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pompey657

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#191504 6-Feb-2016 12:13

Could any Ne on this site give me the best picture settings to get the best out of my recent purchase. The factory settings are ok, and I mean ok!!

But hoping for a better picture, if possible.

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#1486436 6-Feb-2016 12:32

Better picture in what way? What are you trying to watch?

The biggest disappointment from new 4K TV users is SD content which is an unfixable problem - you simply can't expect a 720 x 576 image to be scaled to 3840 x 2160 and still look OK especially if it's now bitrate. It's one of the reasons why so many people still buy Full HD TV's (and manufacturers still make them) rather than moving entirely to 4K.

cyril7

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#1486449 6-Feb-2016 13:03

By the way, now bit rate is much better than low bit rate.

Cyril

Dunnersfella

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#1486459 6-Feb-2016 13:53

sbiddle:

It's one of the reasons why so many people still buy Full HD TV's (and manufacturers still make them) rather than moving entirely to 4K.

Most people still buy based on price...

That's why manufacturers still make 1080 TV's... and really, aside from market share / market presence, it's the only reason.

A vast majority of manufacturers only make a profit on TV's over 55"'s and as a lot of UHD's are in the larger category - it makes sense for them to drive that part of the market. The numbers of UHD panels will only increase.

sbiddle

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#1486472 6-Feb-2016 14:22

Dunnersfella:

sbiddle:

It's one of the reasons why so many people still buy Full HD TV's (and manufacturers still make them) rather than moving entirely to 4K.

Most people still buy based on price...

That's why manufacturers still make 1080 TV's... and really, aside from market share / market presence, it's the only reason.

A vast majority of manufacturers only make a profit on TV's over 55"'s and as a lot of UHD's are in the larger category - it makes sense for them to drive that part of the market. The numbers of UHD panels will only increase.

That's certainly the case, but speaking to a few manufacturers at CES they acknowledge the market for Full HD TV's is still very large - price is part of that, but a growing number don't see the attraction of a 4K TV.

Dunnersfella

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#1486477 6-Feb-2016 14:33

Define 'growing numbers'?

Are the sales of FHD panels actually on the increase?

Or is the interest in UHD with High Dynamic Range dropping even prior to the release of UHD Blu-ray / HDR streaming services?

richms

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#1486501 6-Feb-2016 15:24

They still make sub HD panels in 32" size - only reason is people are cheap.

Its damn hard finding a full HD 22" TV now, plenty of 768 ones, used to be heaps available even in the junkier brands. its purely a price thing.

32" 768 TV with a crappy DVD player strapped to it seems to be selling like crazy at the warehouse.

Richard rich.ms

sbiddle

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#1486506 6-Feb-2016 15:38

Dunnersfella:

Define 'growing numbers'?

Are the sales of FHD panels actually on the increase?

Or is the interest in UHD with High Dynamic Range dropping even prior to the release of UHD Blu-ray / HDR streaming services?

Yeah basically the growth of 4K over FHD panels isn't what they expected. Despite 4K not being in the same boat as 3D I think it's seeing a similar struggle because many people simply don't care.

richms

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#1486508 6-Feb-2016 15:47

Its a shame that 1440p never really happened much, and not at all on TVs. That would be a good inbetween as it is much easier for a PC to game in a decent framerate at it, and the UI isnt absurdly small like 2160p gives you.

Richard rich.ms

Dunnersfella

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#1486531 6-Feb-2016 16:18

sbiddle:

Dunnersfella:

Define 'growing numbers'?

Are the sales of FHD panels actually on the increase?

Or is the interest in UHD with High Dynamic Range dropping even prior to the release of UHD Blu-ray / HDR streaming services?

Yeah basically the growth of 4K over FHD panels isn't what they expected. Despite 4K not being in the same boat as 3D I think it's seeing a similar struggle because many people simply don't care.

What manufacturers said that to you?

Two of my colleagues were at CES and said they were told the opposite... of course sales people and sales managers would say so. I'm surprised you found an honest one to be honest! The exception was a few projection companies (who didn't happen to have any UHD projectors developed yet).

pompey657

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#1486721 6-Feb-2016 23:27

Thanks for the comments guys, but I'm still at a loss for the best possible settings for the picture...

ie, sharpness, contrast etc.. The full list..

Anyone can help me, I'd be appreciative for that.

sbiddle

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#1486745 7-Feb-2016 06:56

pompey657: Thanks for the comments guys, but I'm still at a loss for the best possible settings for the picture...

ie, sharpness, contrast etc.. The full list..

Anyone can help me, I'd be appreciative for that.

There isn't really a simple answer to this because every single TV out there is different, and most people have very differing opinions of what determines the "perfect' TV.

The first place to start as always is one of the many online resources such as avforums and THX (just to name a couple) who have created videos, apps and resources to help do exactly what you want to do.

bazzer

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#1487299 8-Feb-2016 10:48

sbiddle:

Better picture in what way? What are you trying to watch?

The biggest disappointment from new 4K TV users is SD content which is an unfixable problem - you simply can't expect a 720 x 576 image to be scaled to 3840 x 2160 and still look OK especially if it's now bitrate. It's one of the reasons why so many people still buy Full HD TV's (and manufacturers still make them) rather than moving entirely to 4K.

I've never understood this. Why would SD look worse on a panel the same size at 3840x2160 compared to 1920x1080? Doesn't a group of 2x2 small pixels the same colour look identical to a single pixel at the lower resolution? SO even with the worse scaling method in the world it should look the same. Is it the gaps between the pixels that causes the problem?

Masterpiece

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#1487529 8-Feb-2016 15:03

Someone could give you settings, but they would be just like all the default selectable modes of the display. Even if the same model, variation between displays makes generic settings well like default modes, "ok" but never right.

If you want a better image;

You can get a test disk, Spears and Munsil, HDbasics or the free AVS forums one, these will help you start to get a reasonable image.

However with these test disks you quickly discover you really need a measurement probe to take readings of the display to correct the image to look right, ie as per broadcast standards.

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Masterpiece

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#1487531 8-Feb-2016 15:13

Bazzer, well that's where quality upscaling comes in, along with the original material quality.
Cheap processing, although the modern display is far better than they once were, they still are not up to dedicated video processors.

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richms

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#1487549 8-Feb-2016 15:44

bazzer:

I've never understood this. Why would SD look worse on a panel the same size at 3840x2160 compared to 1920x1080? Doesn't a group of 2x2 small pixels the same colour look identical to a single pixel at the lower resolution? SO even with the worse scaling method in the world it should look the same. Is it the gaps between the pixels that causes the problem?

It doesnt from a long distance away where SD would be acceptable. But there would never be 4 pixels the same colour from an upscale unless you uses a nearest pixel upscaling, which is what computers used in the 90's that made all the low res video look like a checkerboard. Modern upscaling is sooooo much better than that, and what is in a cheap TV today is better than any "high end" upscaler of a few years ago (except the bottom of the range stuff which is pretty bad)

When close up the edges can appear softer on a 4k panel than a 1080 panel. People equate hard edges to good picture quality which is why most upscalers add a crapload of edge enhancement which just makes things look like they are cardboard cutouts etc. The visible pixel structure makes the edges look sharper.

Richard rich.ms

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