I'm not sure it's that easy. There have been concerns that 3D projectors as they are being used negatively impact 2D screenings: http://archive.boston.com/ae/mo

I'm not sure it's that easy. There have been concerns that 3D projectors as they are being used negatively impact 2D screenings: http://archive.boston.com/ae/movies/articles/2011/05/22/misuse_of_3_d_digital_lens_leaves_2_d_movies_in_the_dark/ http://archive.boston.com/ae/movies/articles/2011/05/22/misu...