thorr said:

I respectfully disagree that they are soft. If you ignore the "softness" of the movie, and look more closely at the fine details of the image, it is very sharp. There is some print damage on the frame and you can see it clearly. I don't think a 4K, 10K or whatever is going to get much more out of it. It is what it is.

Remember that often a 2K or 4K scan includes the sprockets and soundtrack areas of the film so the final resolution can be considerably less.

Even on a print that won't resolve 4K, it is better to scan in 4K, it gives you finer control when stabilising footage etc. as you can adjust at a pixel level, so you get twice as fine an adjustment without having to resort to sub-pixel alignments which lose detail in the resampling process.

The same with repairing damage, the torn area of the film is resolved at twice the detail allowing any warps or movements of part of a frame to be done without resampling, or if you do have to resample you get a better result.

It is also easier to discern what is grain and what is dirt and other crud.

So there are advantages to scanning at a higher resolution even if the print isn't the sharpest.