topic Re: This is Ultra HD Channels. in Archive

This is Ultra HD Channels.

Ben1980 — Wed, 17 Nov 2021 21:36:33 GMT

Hi all,

Can anyone explain the differences in these channels.

The brightness on channels 2008 and 3050 is far higher than that on 2009 and 3049.

2009 and 3049 appear to be similar in brightness when the option to play HDR football is on.

Re: This is Ultra HD Channels.

Anonymous — Wed, 17 Nov 2021 21:40:36 GMT

The brighter one is UHD the dull one is UHD HDR.

Re: This is Ultra HD Channels.

GD1 — Wed, 17 Nov 2021 21:41:17 GMT

@Ben1980 wrote:
Hi all,

Can anyone explain the differences in these channels.

The brightness on channels 2008 and 3050 is far higher than that on 2009 and 3049.

2009 and 3049 appear to be similar in brightness when the option to play HDR football is on.

I believe some are HDR, while the others are not.

Re: This is Ultra HD Channels.

Ben1980 — Wed, 17 Nov 2021 21:46:21 GMT

Pretty much what I thought. Shouldnt this be the other way around?

Re: This is Ultra HD Channels.

LGUser — Wed, 17 Nov 2021 21:54:31 GMT

@Anonymous wrote:
The brighter one is UHD the dull one is UHD HDR.

If that is the case, then the TV is not properly adjusted. SDR is too bright and HDR not bright enough.

Re: This is Ultra HD Channels.

bayardm — Sat, 20 Nov 2021 18:16:10 GMT

@Ben1980 Can you please explain your Ultra channels, to someone new to Glass. On my epg I can only see channels 3046-3051, I’m watching footie on one of them. My packages include Ultra HD.

Re: This is Ultra HD Channels.

Anonymous — Sat, 20 Nov 2021 18:51:59 GMT

All of the channels are UHD some are UHD HDR as channel 3050 is. On glass the brighter channels are non HDR, basically because the tv can't handle UHD HDR due to technical limitations, so they appear dull/dark - they shouldn't and song on decent televisions - such as a good QLED or an OLED set. Effectively sky have used a low to mid range panel, which isn't any good for HLG UHD HDR

Re: This is Ultra HD Channels.

LGUser — Sat, 20 Nov 2021 19:17:54 GMT

@Anonymous Are you sure the problem with HLG isn't that you have SDR turned up too much?

Re: This is Ultra HD Channels.

Anonymous — Sat, 20 Nov 2021 19:53:26 GMT

No the problem is a poor panel with only 630 NITS

Re: This is Ultra HD Channels.

LGUser — Sat, 20 Nov 2021 20:27:10 GMT

@Anonymous wrote:
No the problem is a poor panel with only 630 NITS

WHat do you have SDR turned up to? Given that youhave 630 nits, 200 nits for SDR and that would leave 430 more nits for HDR. I don't see a problem.

Re: This is Ultra HD Channels.

Anonymous — Sat, 20 Nov 2021 20:39:08 GMT

@LGUser Do you have or have you used Sky Glass ?

Re: This is Ultra HD Channels.

LGUser — Sat, 20 Nov 2021 21:03:38 GMT

@Anonymous wrote:
@LGUser Do you have or have you used Sky Glass ?

Don't have and have never used Sky Glass. But, I do know that most programs are made for 100 nits. So 640 nits gives you plenty of extra nits forHDR. I really don't see the issue.

Re: This is Ultra HD Channels.

Anonymous — Sat, 20 Nov 2021 21:20:19 GMT

With respect @LGUser @you are talking absolute rubbish. For a tv to produce a half decent picture on UHD HDR using HLG the tv has to have a minimum NITS of around 800. Sky glass maxes out at 630 NITS. I would also suggest you try sky glass, it may give you some more first hand experience when you are advising/commenting on the thread.

Re: This is Ultra HD Channels.

Anonymous — Sat, 20 Nov 2021 21:25:33 GMT

Sky Glass review: HDR performance

While SDR performance is admirable and overall picture quality is pleasing, the Sky Glass isn’t a strong performer when it comes to HDR content, despite its Dolby Vision certification.

Coverage of the DCI-P3 colour gamut is only 70%, although those colours are reproduced accurately with an average Delta E error of 2.42, but it’s the peak brightness that really spoils the party.

With the D65 Standard white point mode selected and local dimming enabled, we found peak HDR brightness reached a maximum of only 439cd/m² and then only with a full-field white pattern displayed; it dipped to 270cd/m² on a 10% window. Those figures are distinctly average for a TV costing £849 and leaves Sky Glass lacking pop when displaying HDR content

Indeed, the results are similar to those achieved by the Hisence and 43in and samsung au900 both budget TVs costing less than £500.