Impossible Project opacification test film. This was shot inside, in bright indirect sunlight. I used an SX70 with an ND filter, and I did NOT shield the film at all upon ejection. It was exposed to light for at least the first whole minute before I tucked it away under a piece of cloth.
Impossible Project says that this film is only testing the opacification and that the colors aren't optimized, but I think the colors look pretty darn good here!