you can shoot native 3D and use some post corrections (usually narrowing the difference between the two pictures for some reason) and get that cardboard or miniature effect.
Miniature effect is usually caused by too heavy use of DOF. It is very easy to reproduce with LensBaby, even in 2D.http://www.lensbaby.com/gallery-photo.php
That is why most CGI movie looks greater, because you can shoot with a virtual lense that has capabilities (like exposure, versus speed, versus DOF) you can hardly reproduce in real world.
most of CGI movie have sharp edge from foreground to background while other tricks are used to show distance (like fog, motion blur, transparency, faded color or light intensity).http://www.google.com/search?hl=en&c...Nq2Q4gSFlMj5BA
So the eye is free to wander inside the picture, not only on the surface but also in the depth, with correct sharpness.
If you do that with usual movie, since the director use DOF to bring the eye to the important part of the picture (the rest being more or less fuzzy), in 3D this is counter productive. If the eye start to look in these fuzzy parts, it (and the brain) are just lost, brain and eye trying to get focus where it is impossible. again, this is a demonstration that our vision is mainly 2D (kind of stacked cardboard vision) because we cannot get a deep vision (all in focus at the same time. But it so fast (for most of us) to get the eye acquire the proper focus on different planes that it is easy to believe we really get everything in focus. It is also possible that the time required to get focus is used by the brain as a distance measurement.
I know some people whot get old and had to stop driving because their eyes were unable to focus fast enough. The lag is so great (few secondes) that they really see "carboard", one at a time.
If you take back the list of things (posted few page before in that thread)that allows to build volume in vision , you can use one element or another to get the effect. That's what make a great specialist for 3D. Unfortunately we are not all sensible to the same degree to each parameter.
So one "trick" could work more or less.
The same psycho-reduction is done with sound (stripping some frequencies) or picture (reducing resolution in chroma) mainly to get a better compression of signal. In stereoscopy, we can say this is most of the time not intentional, but rather caused by limitation in the technology (mainly display).
Gamers use a term to define the level of success reached: Immersion.
Stereoscopic signal can give several level of immersion depending the audience (the wow effect being usually at best with people seeing 3D picture for the first time) or content (3D roller coaster are usually more disturbing than 3D cats sleeping on the sofa).
The problem is in movies, immersion is not the ultimate goal, while it usually is in games, because in game, we have a centric attitude (the player=hero interacting with the game) while in movie we got a spectator (usually passive) and the player is the character(hero) on screen and the result of getting the spectator "immersed" is not totally obvious versus efficiency of the story, since there is no place for him in the scenario.