P3D Re: "Too much depth"

[Gabriel Jacob <jacob@xxxxxxxxxxxxxx>]

Chris Jones writes,
 
>Nope, the problem seems to be that the brain processes stereo information
>in more that one way. It's used to using static cues (like those you get in
>a stereo photo) for objects more distant than about 2m (the good old 1 in
>30 rule). But when you get up close, you don't naturally fuse the left and
>right images that way. 

The brain processes "stereo" information the same way, regardless of distance.

>This is pretty much common sense, since it gradually becomes less seeing
>the same object displaced laterally against the background and more a case
>of seeing two very different views of the same object.

In stereopsis, the exact same mechanism is at play, that is, disparity, 
regardless of distance. In the close-up example you give above, the two
very different views of the same object is still a disparity factor.
Disparity is resolved not only around the edges of an object but within
it also.

Gabriel