For obvious reasons, Polaroid instant film eventually was put out of business by digital. But, for at least a decade after that people were still buying up old expired Polaroid film because of the interesting effects it gave. 

   Then, a company called Impossible Project decided to try and bring it back themselves.  Reinventing it from guesses at the formula.

   Lost technology is an interesting thing, you can only point to a handful of times in history when it's happened, but it does happen. Impossible spent years of experimentation trying to duplicate Polaroid film, and during that time the film was highly unreliable, creating all kinds of weird lighting and emulsion errors.  It was an expensive hobby, averaging maybe one decent shot out of every $40 pack of film.  But it had this dream-like look that I absolutely adored. 

   The story has a strangely sad ending. Eventually, Impossible actually bought Polaroid, and got the formula, and started making perfect film.

   Perfectly boring.

   Now it is merely what it was right before Polaroid when out of business, and I gave up the hobby when a clumsy helicopter pilot broke my camera in Hawaii.