Tema: Biutiful (Alejandro González Iñárritu, 2010)

Pues, si en la edición española es así, ya han metido la gamba una vez más. La edición americana sí parece respetar la alternancia original de los formatos:

http://www.dvdbeaver.com/film3/blu-r...ul_blu-ray.htm:

" Video: Aspect ratio: 1.85 + 2.4:1",

y aclara que esa era la intención de Iñarritu y Prieto:

Firstly, in regards to the fluctuating aspect ratio - between 1.85-2.4.0:1 - there is a discussion with the DoP Rodrigo Prieto HERE at the American Society of Cinematographers. Ex. "We made the aspect-ratio transition a few scenes later on a crane shot at the beach, using an angle of the ocean to open the edges of the screen to 2:40. I shot most of the movie with Panavision Ultra Speed [Z Series] MKIIs, and for most of the anamorphic work I used Panavision’s G-Series lenses. Whenever there was a source of light in frame, like a window, the MKIIs would cause a slight flare, and they gave the image a hard edge and contrasty feel that we liked. For certain moments, we enhanced the flare of bright sources with a Tiffen Smoque Filter on the camera."

Por si fuese poco, incluso en el imdb se especifica que la película comparte originalmente ambos formatos:

http://www.imdb.com/title/tt1164999/technical