I was watching the Shawshank Redemption on Blu-Ray last night and noticed it said restored in digital HD. Looking back at older copies of it, the quality was no where near as good. I know it was shot on film but this got me thinking, how do they actually make the quality better? I know they can remove noise, and do some other thing to improve quality of certain areas of the image like shadows, but I don't know how they made it look x3 better quality. Can anyone enlighten me?
Thanks!
Thanks!