The difference between High Definition and Blu-ray
First of all, let's define high resolution: It's anything about 480. So high definition can be 720, it can be 1080, and it can be 1080 Blu-ray. So there are three (3) high definitions. Of course, the higher the number, the sharper the image, until you get to a specialized player, which has a blue laser beam inside of it (really!).
High definition that you can stream from places like Netflix is great, but it can't be Blu-ray. And although I invested in a Blu-Ray player years ago, I am finding that I am watching most of the movies I watch these days on Netflix, which is HD (high definition) and looks great, but it's not Blu-ray.
And seriously, unless you need to count all of Sean Connery's nose hairs, most movies aren't worth investing in a Blu-ray copy. For documentaries, like "Planet Earth", they are. In fact, after you've seen the gorgeous picture of Blu-ray, it's just about impossible to appreciate something like that again, even in normal high definition.
So there it is. High Definition does NOT equal Blu-ray. And high definition can be as low as 720. It still looks plenty sharp, though, and it streams. Excuse me, I'm going back to watching a movie on Netflix now!
Posted by Brad Hall