4K

Chapter Eight

 

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This page will feature 4K, also known as Ultra High Definition screenshots. We want to give you, the viewer, an idea of the breathtaking clarity of 4K. This discussion is simplistic, purposely avoiding long technical dissertations on both the video and audio equipment required to create an ideal home theater.

We have seen passe’ 4K and truly outstanding 4K demonstrated on several different televisions. If you love movies like myself, you probably have set up your own “home theater”. Today it’s costs about $100. to take the family out to see a movie. First you have to drive down to the theater, look for parking, stand in line, pay for expensive tickets, popcorn, candy etc. Hopefully other members in the audience will be respectful and silent instead of talking on their cell phones. In the last movie house we attended, the management announced over the system, “turn off your cell phones and be quiet during the movie” Really!? We’ve all been through it, right? Why put yourself through all that nonsense.

The goal is to recreate in your home, as close as possible, the experience of the big screen commercial movie theaters. We do this by setting up the largest screen possible connected with high quality outboard surround sound speakers currently up to 9.2. 9.2 means three front speakers, two side speakers, two rear speakers, two speakers on the ceiling, and two sub-woofers. This setup immerses us in sound and comes close to the very best movie houses today. Next, we want the largest screen we can fit into our living environment to recreate the cinematic movie experience. Of course we could never duplicate the IMAX experience, but if you have an 80 inch panel or say a 120 inch or larger projector in your home, it comes close. This is because you are sitting much closer to the screen in your home than in a movie theater. Instead of looking at a fixed point on a small CRT television, your eyes are tracking left and right, following the motion on the big screen. You become immersed in the world that the movie producer tried to create for you. The next thing we want is the best picture quality possible. We started out with standard definition, 4.3 television, followed by Betamax, VHS, LaserDisk, DVD, HD 16.9 television, HD BluRay. Now we are ready for 4K television.

When building your home theater, add your personality, make it your own, big or small, think about furniture placement and lighting. With OLED technology, you won’t have to compromise, everyone will have the perfect view.

Some people have built their home theaters in the grand, classic style complete with ticket booths and marques.

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Then walk into this …

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Or this …

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Or this …

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Or this …

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Some people build their theaters in a sleek modern style.

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For the rest of us, something more attainable …

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Author’s modest system under construction. My cameras wide angle lens makes the screen appear about twice as far as it actually is and the camera lens is about three feet behind the viewing sofa. The center of the screen measures 11 feet to eye position in the sweet spot. The recommended distance for this size panel is 9.5 feet depending on what standard we use, SMPTE or THX. For esthetic and practical reasons, we can’t get closer then 11 feet. That will change when we install the 4K projector. We will be well within recommended distance.

We purchased a new home this past May, 2016 and this is our new “home theater”. We plan to add a motorized drop down projection screen from the soffit. It will be 130 to 150 inch diagonal in size. We also plan to add archectural texture to the back wall behind the screen to jazz up the look. A 4K laser projector will be added. The panel in these photos is a Sharp Aquos 70 inch LCD with full array local dimming LED backlight system. It was purchased December, 2011 and has been operating continuely about 16 hours every day since. We estimate the panel has more than 28 thousand hours of operation without a single hiccup or failure. After the break in period, we had the panel calibrated to the existing HD REC. 709 color space by ISF (Image Science Foundation) software, cameras and technician. See the pre and post calibration charts below.

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The pre calibration setting shown in the above charts are typical of the majority of sets being sold today and to make matters worse the sales people in big box stores turn up the brightness, color and contrast settings to attract customers. By doing this, they think we the buying public will pick one set over another because of this perceived improvement in the color images. It’s an old, stale trick and the informed consumer knows better. Television manufactures are becoming enlightened and a few have incorporated advanced user calibration setting on their sets. Some television companies have collaborated with Hollywood film producers to create color images on their sets that come closer to the standard (HD Rec. 709) used today. Now we are moving to the new color space standards which will give us better colorful images on our televisions. The existing color space, NTSC color space adopted 1953, but in practice never used, more accurately defined as SMPTE-C color gamut (SMPTE: Society of Motion Picture and Television Engineers) and subsequent. Technology has moved beyond the old standards and it’s about time we had a change!

WHY SHOULD WE CALIBRATE?

You just purchased your new HD or 4K ultra high definition television. You want your viewing experience the best it can be with the best quality images possible. Your purchase was a big investment, spending your hard earned money on your new HD or 4K ultra high definition television. As explained above, you won’t see the best picture until you take the next step and have your television professionally calibrated. It’s a small investment and will reap you generous rewards. Your selling yourself short if you don’t calibrate your set. You should be seeing movies the way the movie Director intended you to see them. ISF calibration will adjust your television as close as possible within it’s individual limitations to the accepted standards adopted by the industry. (SMPTE, THX and others) This PDF courtesy of ISF is a general outline to give you insights of television imaging history.View now.

This PDF bookcourtesy of Alexis Van Hurkman will give the reader advanced information about color correction.

This color space chart shows the NTSC 1953 color space together with the SMPTE-C color space. It is my understanding that the NTSC 1953 color space was issued for color broadcasting compatibility with the majority existing black-and-white receivers of the time, but in reality there was no over the air color broadcasts using this advanced for the time, color space. Instead SMPTE-C was used. We learned that the original CRT’s used in RCA’s first two color televisions (1954 CT-100 and 1955 21CT55) used the expanded color gamut phosphors. Correct me if I’m wrong.

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This color space chart shows the current REC. 709 (SMPTE-C) and the new color spaces. There are just a few flat panel televisions capable of displaying DCI-P3 as of this writing. (July 28, 2016) REC. 2020 color space is included in the newly adopted 4K BluRay format.

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Sample post calibration images displaying live broadcast television on the Sharp Aquos 70 inch LCD. Photographed October and November, 2014.

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One more captured from Dancing With The Stars, photographed December 15, 2015.

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This room now has a 5.1 surround system, we will upgrade to a 9.2 Dolby Atmos surround system. The overhead soffits lend themselves well for the “air” speakers. We could take it further and add custom cabinetry around, above and below the flat panel screen. Soft, low wattage lighting to wash the back wall behind the flat panel will also be added. We are just getting started as this post and photos were made July 3, 2016. Stay tuned for further updates.

Our vintage RCA color television consoles are located in the rear portion of this room behind this front view of the room. We will also add a few vintage RCA early color television advertisements, enlarged and framed in the vintage color television area. Tap on below photos for full view.

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A live CBS network broadcast.

05D8A80F-A589-433E-90AF-3796418DFCA8Grace Kelly, Rear Window 1954, Technicolor.

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The color balance is off due to the incandescent lighting. Her skin tone should look the same as the above photo.

2016 Rio Olympics. 1080i Rec. 709.

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UPDATE, OCTOBER 1, 2017:

We installed 18 inch grey veined porcelain tile in our A/V room and a new Italian Nicoline club sofa with fully reclining seats and premium leather. We added a BDI A/V cabinet replacing the old modular cabinets and added a new fan. For fun and interest, we added two RCA advertisements from 1955 and a Du Mont advertisement from 1948, all in matching, matted frames. We found a Gary Grant art work to add to the mid-century look. Maybe Marilyn will go next to him. 😃 We found two mid-century lamps complete with pull chains and fabric covered power cords. Tap on the images for full view.

 

 

This is the current 70 inch panel in the front portion of the room. We are currently in the planning stages to install a high end Sony 4K 120 inch projector with Dolby Atmos sound system. The screen will be a drop down motorized unit concealed in the plant bridge. Later we plan to install premium woodwork such as zebra, ebony or rose wood laid out in a horizontal pattern behind the flat panel. To complete the room we will add LED down lights to wash the new wood wall with soft warm light. The flat panel television will remain in place and the projection screen will drop down in front of it. To complete the room, a few movie posters, chair rails and a popcorn machine.

 

 

 

 

Stay tuned.

 

So sit back, break out the popcorn, dim the lights and enjoy the show. 🙂

The Japanese Goverment intends to leap frog the United States and introduce 8K mainstream television to their people in time for their hosting of the Olympic Games. A friend living in Paris had the opportunity to view live 8K video of the 2012 London Olympic Games. He described the experience as looking through a window without glass or filters into the real world. The viewing was demonstrated on an 84 inch Sharp 8K LCD television. We hope the United States adopts 8K, but in the meantime we move to 4K. We hope to purchase a 4K television, preferably an OLED 4K soon. We will buy the largest screen possible because we want to be temporary immersed and transported into the world of the movie we are watching. Only a large screen can provide that experience. In the 1980s and ’90s, we watched LaserDisk movies on a 15 foot Kloss Nova Beam Model 1A rear projector.

The clarity of 4K is apparent, even though these 4K screenshots from You Tube via Apple TV were captured on an ISF calibrated to Rec. 709 color space, 1080P Sharp Quatron LC70LE735U LCD 70 inch television. The Quatron panel has 25% more pixels than a conventional LCD television because of the addition of a fourth sub-pixel. This does not mean the Sharp Quatron panel produces higher resolution then 1080P, just that the individual pixels are 25% smaller and packed closer together. The 25% increase in pixels allows the overall screen to have greater clarity. Imagine if these same images were photographed on a calibrated 4K OLED television with four times the resolution of my set. I think it would look amazing. The first image below seems to have a 3D quality about it. Tap on the unretouched images for full view.

Watch the 4K video.

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We will soon post additional screenshots, and very soon, actual 4K screenshots. We are just waiting to make sure the television we purchase can display the extended color gamut and HDR capabilities of the new format.

Color space and HDR (High Dynamic Range) charts.

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This article courtesy of Wikipedia is probably the most complete source of information on the new format. We are waiting for the final release of the Ultra HD BluRay specification, and will publish it here when available.

Ultra-high-definition television

Comparison of 8K UHDTV, 4K UHDTV, HDTV and SDTV resolution.image

Diagram of the CIE 1931 color space that shows the Rec. 2020 (UHDTV) color space in the outer triangle and Rec. 709 (HDTV) color space in the inner triangle. Both Rec. 2020 and Rec. 709 use Illuminant D65 for the white point.image
Ultra-high-definition television (also known as Super Hi-Vision, Ultra HD television, UltraHD, UHDTV, or UHD) includes 4K UHD (2160p) and 8K UHD (4320p), which are two digital video formats proposed by NHK Science & Technology Research Laboratories and defined and approved by the International Telecommunication Union (ITU).

Next, Page Vintage Micro Radio.