This question already has an answer here:
I have a 500mm f/8 mirror lens, which is super cheap and light, but which offers terrible resolving power (and a concomitant difficulty in nailing its manual focus). This 50% crop is pretty much as sharp as it can get:
But one feature of the body I'm using is the ability to capture 12fps.
I've seen focus stacking done (usually with some difficulty), and I've also seen software (and now even some cameras) that produce "super-resolution" by stacking rapid exposures of the same scene. I suspect that, at least in theory, one should be able to produce higher resolving power or (equivalently?) lower Gaussian blurring resulting from an inferior optical system like this by incorporating the information in multiple samples of the same scene. Is that correct in theory?
In practice are there any methods or packages that can produce a sharper image from multiple exposures of nearly the same scene?
(To clarify: I imagine that one must stipulate that some minimal change in the scene exist between each image in the stack. But I also imagine that for "de-blurring" this would be on the order of the radial standard deviation that one is attempting decrease. E.g., for distant scenes and/or long focal lengths such small perturbations could conceivably be produced by things like atmospheric disturbance or shutter shake.)