I actually have another question. Does the process of going from the negative to a release print distort the image in any way? In other words is it technically possible to retrieve a more or less exact copy of the original interpositive by averaging and then deblurring an infinite number of release prints? In general I’m wondering what the limitations are of doing a restoration from a set of release prints, rather than using an interpositive, or the original negative.
Interpositives and prints are made with contact printing. That is to say, they sandwich the two pieces of film together and shine a light on it. Because there’s no lens, there’s no risk of light refraction.
But I could be wrong…