The film is very thin. There are countless small bubbles when mounting that are not completely removed. Instead, quickly joined by a few scratches to do so because the film is probably just too soft. I can only advise you to buy a high-quality film. On my old camera I have a Crystal Clear film of Dipos. Although the costs considerably more, but it is completely free of bubbles and someone who would not know it did not come up with the idea that it exists. Even after a year it is still in very good condition and you can certainly make a number of years on it.
Supplement: I have to correct something my judgment. After a few days at least, the blisters are completely gone.
