ALEXANDRIA, VA.—By now, everyone has seen ads for inexpensive 4K TVs, most of which are larger and cost less than the 47-inch HD set I bought in 2007. Consumer electronics manufacturers report good ...

It took a while, but 4K Ultra HD TV is nearly everywhere now. All of the best TVs support 4K, as do most new TV shows and movies, with the exception of traditional broadcasting—and even that is poised ...

4K and HDR are the peanut butter and jelly of modern televisions. Where you find one, you’ll find the other. Together, they’re the recipe for a delicious eye-candy sandwich. Monitors aren’t so lucky.