In TV Tech Explained: Mind Your Gamma I covered gamma and its importance for playback of standard dynamic range (SDR) video. But high dynamic range (HDR) is a new and very different animal.
Unless you're accustomed to turning on your new set and never touching any of the controls beyond volume (and if you're reading this that's probably not you) Gamma is a control and a subject worth knowing more about.
In a recent review, not yet published, I opened with a few remarks on the cost of today's premium Ultra HDTVs. Are they much more expensive than they were decades ago when adjusted for inflation? It's question worth revisiting in more detail.
In the early 1970s a good, 21-inch console color television might cost you $500. In today's money that would be around $3300
The big news story of last week wasn't out of Washington D.C., or about the current state of Covid, or who has just cancelled who or what, or even the new line of TVs ready to flood your local Costco, Sam's Club, Best Buy, or any number of other retailers. It involved a giant cargo ship, the Ever Given, getting stuck in the Suez canal with hundreds of other ships lined up behind it and unable to get through with their cargo. What's this have to do with home audio and video?
My first color TV, a Zenith (remember them?) was a 19-inch CRT that cost me somewhere around $350 and weighed a ton (or seemed to). Today, the only display devices you’ll find at that size are computer monitors; they’ll cost you considerably less and can be carried around under one arm.
I was reminded of that as I recently visited the TV department in my local Best Buy. Even with Black Friday firmly in the rear-view mirror, there were, quite literally, stacks of boxed TVs filling the aisles. I don’t think I’ve ever seen so many crowded into one space, perhaps not even at CES. And in an area with a population of roughly 100,000, that’s a lot of TVs to sell. Most of them, even the larger models, were well under $1000, reflecting the modest incomes of a primarily middle-class region.
But new TVs are always a hot item, and this is a prime time of year for TV sales...
When I have visitors over to watch a movie, the choice of which film to watch is always a challenge. Typically, none of my regular guests care for either science fiction or animation, and those genres make up perhaps half of my collection. But that evening's selection, Chariots of Fire, was a title I hadn't watched in years.
I was recently riffling through my collection of video discs, searching for one to use to use as a source in a review, when 2017's The Finest Hours dropped into my hands for the first time years. It's the true story of the nearly impossible rescue of an oil tanker, the SS Pendleton caught in a furious February 1952 nor'easter off Chatham Massachusetts on Cape Cod. It remains the most incredible small-boat rescue in Coast Guard history. Coast Guard Petty Officer Bernie Webber and his small crew set out in a 32-foot boat to save the tanker's 32 surviving crewmen.
Last month I blogged about the color gamuts used for Ultra HD. But there’s always more that needs to be said. So with a little repetition here where unavoidable, or as needed to set the stage, let’s dig a bit deeper.
There’s no such thing as a P3 color gamut in the UHD standards, only BT.2020 (also known as Rec.2020). But there is a DCI/P3 color gamut in the video universe (DCI stands for Digital Cinema Initiative), and it’s used in all digitally projected theatrical presentations (which today means virtually all films in theaters).
Because time is money, film studios use the P3 color gamut today on virtually all of their Ultra HD video releases, since video masters in that gamut already exist. And no consumer displays can do significantly better than P3.
Manufacturers have made much noise about P3, as have we in some cases...