How HDR works

 HDR Images, Technique  Comments Off on How HDR works
Sep 302016
 

High Dynamic Range TVs and devices are here, along with HDR TV shows and movies. You can buy a new 4K HDR TV for as little as $450 and stream HDR Netflix and Amazon, or add a $300 Xbox and spin HDR 4K Blu-ray discs. HDR games are coming soon, and even phones and PC screens are attaching those three buzzy letters.

But how do they work? Is HDR just another marketing gimmick to sell TVs and other gear, with no technology behind it? What does it claim to do, and why is that better?

Well folks, if those are your questions, you’ve come to the right place.

What’s HDR?

For the basics about what HDR is, check out What is HDR for TVs, and why should you care?. The short version is an HDR TV, when showing special HDR content, has a wider dynamic range (i.e. contrast ratio), along with more steps in brightness (for smother transitions and more detail in bright and shadowy areas). Also, usually, HDR is paired with Wide Color Gamut (WCG), which offers a greater range and depth of color.

Unlike 4K resolution, curved screens or 3D, HDR is a TV-related technology we’re actually excited about. In the best cases it actually improve the image beyond what you’re used to with non-HDR video (standard dynamic range, or SDR), including conventional high-def, Blu-ray or even 4K. How much of an improvement–if any–depends first and foremost on the capabilities of TV itself, but also on the content.

Of course you’ll need to be watching actual HDR content on a new HDR TV to see the benefits. Fake HDR “upconversion” is available on some products, but it’s not the same.

Read More:

cnet

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Jan 022014
 
See the full article at the link below:
Behind the scenes with Dolby’s new HDR TV tech | TV and Home Theater – CNET Reviews

“While the majority of the TV industry prattles on about higher and higher resolutions, few talk about improving other,

more important aspects of the TVs picture: contrast ratio and color.

Dolby, though best known for its audio technologies, has been doing a lot with video recently too.

The latest development addresses dynamic range, or difference between light and dark, for televisions.

The company says it wants to enhance not just contrast ratios, but the richness and realism of color as well.”

-Geoffrey Morrison, CNET

Oct 182012
 

Revamped DNG format shows new Lightroom possibilities | Business Tech – CNET News

Stephen Shankland

“Adobe’s updated raw-image format now handles stitched panoramas and HDR photos, part of a plan to attract more photographers and allies.

Adobe hopes to see the features used — but isn’t promising anything.”

Apr 282012
 

Canon 5D Mark III sensor test underwhelms – Cameras – CNET – CNET Asia

Feb 062012
 

Nikon confirms 36.3 megapixel D800, we go hands-on — Engadget

Nikon’s latest camera is made for videographers, and it shows – The Washington Post

Nikon | News | Digital SLR camera D800/D800E

Nikon D800 / D800E | PhotographyBLOG

Nikon woos the pros with long-awaited D800 | Crave – CNET

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