Re: A few words about...™ Casablanca -- in HD-DVD
In an attempt not to sound like a textbook, there are a myriad of problems in restoring a film such as Casablanca photochemically.
Having been misused for decades, overprinted, shipped into questionable hands for odd reasons...
the Oneg now is at best incomplete. Old dupes are what they are, and if no old fine grain is extant, grain and contrast continue to rise as the film is restored.
It is only via digital restoration techniques, which added many new tools, that we have any ability to even out shot-to-shot problems, to literally take shots back in time, and generations, by reducing grain, contrast, dirt and wear, and to attempt to create, as Warner has, what gives the appearance of being a cohesive motion picture, all of a unit, and original.
This is why prints manufactured over the past three or four decades have been unable to replicate the look of the originals.
Then we have the reduction in silver content...
RAH