What’s the relationship between resolution and zooming in? If we can upgrade the resolution of old movies, can we eventually see things microscopic?

Question

If you zoom in on a picture, the resolution drops rapidly. But the resolution of a picture or movie can be increased (such as a 4K upgrade) so could we eventually see very small or even microscopic things in old pictures or movies if the resolution keeps getting upgraded?

In: Technology

Answer 1

We haven’t really upgraded the resolution of old movies. Those movies were shot on physical film which can capture more detail than HD(and arguably, more than 4K). When the movies were “upgraded”, all we did was scan the film at a higher resolution.