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The footage is analog (on film). It was shot with 0 pixels, so 4k pixels on an edge doesn't matter. Side note, footage itself is a term derived from film (how many feet of film).

You can scan film into whatever digital resolution you want. You could do an 8k scan if you felt like it. You might run into issues where the resolving power of the film is less than the scan, but 4k is not an unreasonable resolution to pull out of well lit studio shot movie stock.

It was on film, probably 35mm. That film contains more information than 4k video. Resolution is between 4K and 6K.

Plus it’s a black & white movie, and b&w film has a higher “resolution” than color too right? Because you’re dealing with silver particles instead of physically larger color grains.

Or something like that. Someone more in the know please check my math.

It's not in black and white.

It was shot in colour. But the rest of the comments in the tree apply.

It seems my memory fails me.

If it was shot on film, isn't it possible to get 4K from it? Thought that was old news already.

Obligatory Technology Connections video: https://www.youtube.com/watch?v=rVpABCxiDaU