Originally Posted by lady_xanax:
“My problem with an HD TV is that (correct me if I'm wrong) it will expose and magnify the flaws in older/lower quality prints.”
Well, yes it would, but that's far from the whole story (or complete picture, if you will!

).
Most film formats have far more detail in the image (higher resolution/definition and better colour) than HD, let alone SD. Video copies made at standard definition (SD) can mask faults in the original film that HD video copies will reveal. But that's not an argument against HD. It just means more restoration work might be needed to bring the image up to an acceptable level for HD than for SD. There's also a need to preserve material shot on film in a digital form that retains as much of the detail in the image on the original film as possible.
HD captures more of the detail in the original image making it sharper and better colour than an SD version, but still not as sharp as the original film. When you think films from the 1930s onwards were projected onto 50ft screens in modestly sized picture houses you can imagine the detail in the image that is lost when shown on an SD TV. When you watch a feature film on a regular SD TV it's like looking at the original through out of focus glasses. Everything is slightly blurred or soft focus.
There is still some loss with an HD version, but more of the original detail in the filmed image is retained than with SD.
Nowadays digital formats such as 4K or 8K are used when scanning film. These are higher definition formats than HD and approach or exceed that of the original films. There's not much material available to the ordinary consumer in these formats (nor many displays capable of reproducing them!) but they are used for archiving purposes. DVDs (SD) and BluRays (HD) can be easily prepared from these archive masters by "downscaling" them to the appropriate resolution. In the future, versions of these higher definition formats may well become the norm (I certainly hope so!).
Many older films do require
some restoration because of damage either through wear and tear during projection or deterioration by being stored in poor conditions, or because the best source material, the original camera negatives, actually having been destroyed. Sometimes 2nd or 3rd generation copies are the best available sources. The amount of restoration required varies film by film but mostly you can say, the older the film the more restoration is usually required.
There's also the question of the "unwanted" detail captured in the original film, revealed by HD that also requires "restoration". As I mentioned in another post, when they restored original Star Trek for HD (which was shot and edited and post produced entirely on film) they found they could see coffee stains on uniforms. Nails in scenery were suddenly visible too. These problems didn't matter originally as the makers knew they couldn't be seen on a regular SD TV. They were never intended to be shown on large screens. It's not really a problem for feature films.
Overall,
very good results can be obtained from old films from the 1930s onwards. They
can look just as good as scans of much more recent films. Just because it's old doesn't mean it
has to look bad.
Many new films of course are shot digitally, without the use of actual film. Preserving them will be a whole different set of issues, but at the least the value of properly archiving them is now understood.