What I don't like is when movies are released on DVD/Blu-ray and they "simulate" the curved screen and the picture is distorted! I hate that. The specific example that I watched was a documentary that I got from the library called "Windjammer." If they have to "simulate" the curved screen, why can't they have the option to view it in its undistorted widescreen, also? "How the West Was Won" had both versions in its Blu-ray release.
Okay, maybe "hate" is too strong a word...but that kind of distortion tends to annoy me. Granted, I'm not used to seeing those kinds of movies, so that could also be part of the problem.
Well that's tricky because the curved screen was the way Windjammer was originally shown, as well as all the true Cinerama films - they were shot specifically to be shown that way.
But were the three side-by-side frames of the film actually different sizes, or were they just
perceived to be different because the sides were curved closer to the audiences? If they're actually the same size, why not have the non-smile widescreen as an option? Here are two screen-captured images from the "How the West Was Won" Blu-ray, and in the "smile" version, the sides (to me) look distorted, but the regular widescreen image looks fine:

