Popular Mechanics lifts the lid on how the film industry is transforming silver screen classics to high definition formats such as Blu-Ray.

Interestingly there doesn't seem to be a one-size fits all to this transformation with painstaking work being carried out on a frame-by-frame basis on some films to not only recreate the director's vison of the film but also to clean up and perfect mistakes from the original. A really informative read about the things you shouldn't notice when watching a film at 1080p.