Why can old films be in full HD or 4K quality today when in the times they were produced that screen resolution didn't exist? - Quora

What is the point of 4k releases of movies that were filmed before 4k was a thing? How can it be any more detailed than the original cut? - Quora

Why is the Roku 4K Express screen blurry? - Quora

Why can old films be in full HD or 4K quality today when in the times they were produced that screen resolution didn't exist? - Quora

How would sci-fi movies be different if they were more realistic? - Quora

Why are TVs called 4K when they only have 2160 or 2K pixels? - Quora

How come old films are available as HD videos nowadays? - Quora

Do old movies look better in 4k? - Quora

Is 4K worth it on a small screen? - Quora

Why can you watch old movies on full HD or 4K screens that didn't exist in the days when they were made? - Quora

Why do very old black and white films/TV shows shot on film look weird and blurry when watched on modern TVs? - Quora