I rarely buy DVDs... but today I went ahead and purchased DVDs of "The Boondock Saints" and "Doom" for the heck of it and brought them home. Now, I "get" 4:3 and 16:9, but why would someone make DVDs ...

16:9, 4:3, 2.0:1, 2.35:1 – so many numbers, so little time. Here’s what they all mean. Aspect Ratio is a term that defines the shape or relative dimensions of a still image, film or video content. It ...