Disadvantage:
Two stars deduction because of inaccurate blank. I do not mean that the film is deliberately slightly smaller than the screen, but that it has not 100% accurate central axis, ie is wrong. This has the effect that, despite straight (!) Gluing at the upper right corner is approximately 1 mm longer distance from the edge of the display than at the other three corners. And again: I have it glued NOT wrong!
This can probably live, but a 5-star film, it is not.