No question about it: A 4K TV delivers a sharper image than regular HD, especially when it’s showing 4K programming, which is still somewhat limited. For instance, you won’t find it on any of the ...

LOS ANGELES - Perhaps you just picked up one of those new 4K Ultra HD TV sets for Christmas, or are planning to acquire one before the Super Bowl, and now you’ve got a big question--what about 4K ...