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4K disc vrs blu-ray

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Posted on April 8, 2018 at 09:35:39
mbnx01
Audiophile

Posts: 7956
Location: Eagle, Idaho
Joined: October 22, 2004
 Can you tell the difference on a good 4K tv versus a '4k ultra' disc and a regular 2K blu-ray disc?

Not thinking of buying one, I'm just curious.

Anyone done a compare?





'A lie is halfway around the world before the truth gets its boots on'. -Mark Twain

 

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RE: 4K disc vrs blu-ray, posted on April 10, 2018 at 03:20:53
Markw*
Audiophile

Posts: 10370
Joined: June 1, 2001
 With a non-HDR 55" LCD set from about 8 feet away, I'm not sure I can discern a difference.

Now, with a high end OLED with a great HDR system it might be different.

 

RE: 4K disc vrs blu-ray, posted on April 10, 2018 at 07:58:47
Hornlover
Manufacturer

Posts: 2529
Joined: March 8, 2002
 My son got a 40" Samsung 4k HDR TV for Christmas, and watching 4k videos (Blue Planet 2 in 4k), I cant really see any difference from Blue Ray. When you see the demos at Best Buy, I can see a difference, so I guess it depends on the source material.

 

RE: 4K disc vrs blu-ray, posted on April 10, 2018 at 13:48:58
jedrider
Audiophile

Posts: 15166
Location: No. California
Joined: December 26, 2003
 I love blu-ray now. Don't know why I didn't pick up on it earlier as I now want all my movies in blue ray.

Don't have a 4K TV nor player, but for photograghy, I bet it would be fabulous.

 

It depends on the size...., posted on April 10, 2018 at 17:44:48
Rod M
Web Geek

Posts: 16242
Location: So. California
Joined: March 1, 1999
Contributor
  Since: March 1, 1999
 I never worried about Blu-Ray when we had a 55" HDTV. Standard DVDs upsampled looked great. Then, I got a 75" 4K TV and Oppo 203 for Christmas and we upgraded the NetFlix subscription to Blu-Ray and it's fantastic. Depending on how close you sit to the TV, I say that you should go at least 60" before you'll see a big difference in 4K.

Here's a quote from an article on 4K discs which sounds like it's all marketing at this point in time:

2K DIs: The dirty secret

One thing people don't realize about 4K as well is that most Hollywood content today is only 2K. When they edit a movie in Hollywood, they do so using a digital intermediate. On this DI, they do all the special effects, color correction, and final editing. In almost all cases they do it at 2K resolution because either they haven't upgraded their systems to support 4K, or it would be too expensive or time-consuming. Special effects, in particular, take much longer to do at 4K resolution so they almost never are done this way.

This means that even films that use 4K, 6K, or even 8K cameras often produce a finished product at 2K resolution. The image will be sharp and free of artifacts thanks to the higher resolution in the capture, but when you get it at the end everything is done at 2K resolution. 4K discs of these movies, including huge titles like Guardians of the Galaxy 2 and Wonder Woman, are only upscaling 2K images to 4K resolution on the disc.

The good news is that these movies also have HDR and WCG, which make more of an impact than the extra resolution does. The problem is that if you have a TV that is only 4K but can't show HDR and WCG correctly if at all, you aren't getting any benefit from your 4K TV. The image would be almost identical when looking at a 4K UHD disc, where a 2K DI is scaled, or a Blu-ray disc, where the TV does the scaling. There might be some small differences, but nothing to make the price difference or upgrade worth it.


-Rod

 

RE: 4K disc vrs blu-ray, posted on April 23, 2018 at 17:46:21
dandaroy
Audiophile

Posts: 503
Location: Denver, CO
Joined: June 24, 2003
 I have a 65" 4K HDR Sony. With a viewing distance of about 9 ft, I can clearly see the difference in 4K and 1080P. Also, depending on the TV, if the upscaling is good, then even 1080p upscaled to 4k looks better, but that is not a day and night difference. I also have 4K UHD blu-ray player, but I do not use it that much because the disc rental is scarce and buying 4K discs is not cheap. However, I have Amazon Prime and Netflix and both have good collection of 4K material, especially Netflix. Even with streaming, 4K generally looks sharper and more vibrant than 1080p.

I think 4K streaming is the future as 4K discs will never become popular unless there are good rental services. The only downside of 1080p and 4k streaming is the audio which is still mostly DD or DD+ 5.1, sometimes although rarely 7.1. Unless you play 1080p or 4K blu-ray discs you will most likely not get the newer lossless audio formats like Dolby True HD or DTS-HD MA. I have heard Dolby Atmos is slowly making its way into streaming but it is still nescent and only with DD+ 5.1 or 7.1.
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I. Dandaroy

 

RE: 4K disc vrs blu-ray, posted on June 17, 2018 at 21:38:53
Tidycat1
 Don't most 4K offers on the 5" disc also come with a blu-ray version??
Play one ,then the other and decide for yourself.
Really liked the BR version of Avatar,much better resolution of the "night" scenes.

 

RE: 4K disc vrs blu-ray, posted on June 23, 2018 at 06:32:48
Dave B
Audiophile

Posts: 1053
Joined: October 5, 1999
 I have the Sony X940E 75" and the X800 UHD BR player. Bandwidth for 4k streaming is an issue here, due to what service is available and how many devices are connected at any given time to my gateway.

I've gone the other route and have acquired 95 4K UHD discs of movies I like or were rated highly on blue-ray.com.

Of my previous BR discs at 1080, Avatar still looks really good upscaled. I recently put in Wall-E for the kids and it also looked quite good. So, my limited experience says that original BR discs used in a good hardware/dsp/firmware system can still look great.

 

RE: It depends on the size...., posted on July 10, 2018 at 12:58:47
Mr Peabody
Audiophile

Posts: 1109
Location: St. Louis, MO, USA
Joined: August 14, 2010
 The key take away from that article is HDR or Dolby Vision. The resolution itself won't make night & day, but, HDR or Dolby Vision will, even on smaller displays.

HDR is what increases the color gamet and depth. You want to be sure if your display can do HDR, it's engaged. Some first gen 4k players will have you turn on the HDR inside settings, and, some displays HDMI inputs may only accept HDR via certain inputs. You really need to check the manuals on this.

To recap 4k its not the big upgrade, it's HDr or Dolby Vision. They are competing technologies that do sort of the same thing. Like Dolby and DTS to sound.

I think there may have been an issue like mentioned above on Planet Earth when viewed, that's supposed to be the "go to" disc for 4K.

 

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