Just curious about something. With film, the framing and viewing mode has always been "landscape", that is, the horizontal is longer than the vertical. I have never seen it any other way. Because of the physical manner in which film is transported in a projector, I can't see it working any other way. But with digital, theoretically, this needn't be a limitation, other than that's the way all current desktop and theatre projection screens are built. Any moves afoot to change this, even if only experimental?
Most of the digicams film according to how you hold the camera. Playback is another thing. I recently bought a HTC phone/video etc. player (screen is 640 x 480) which switches automatically when you hold it horizontally or vertically. You may remember in years past some "document" computers which had vertical displays, and some of those could be rotated 90 degrees for standard display. Laptops aren't a big problem, but we need desktop displays that can switch easily.