In case you didn't think you were getting hosed enough by the movie theatres

If you find yourself squinting at the theatre, it could be that rather than swap out the 3D lens when showing a 2D movie, they leave it in the projector. The result can be an almost 85% darker projection. To save time (and therefore money), some projectionists aren't swapping the lenses. It requires entering extra passwords to open the projector and some theatres leave the 3D lens in place.

If the movie is really really dark, look back toward the booth. If you see two beams of light coming out, one on top of the other, that's a Sony projector with the 3D lens.

Oh come on. It's not like you pay a lot to see movies in the theatre, eh?