perspective view

Hallo,
I am a newbie and I`ve got a question concerning rendering in blenders perspective view.
If I position a cube on the left or right of the origin the edges of the cube converge to the background - good.
I want to render a cube in one-point-perspective, i.e. the angles of the front side should stay rectangular and only the depth-lines should converge.
But I cannot make it work in blender.
Is it possible to render in one-point-perspective without vertical and horizontal distortion?
I would be very grateful for help.
martin

I am not sure what you want to achive, but what you suggest is impossible.

In perpective all parallel edges on a object share one perspective point in the projection where they intersect.
Only expection are those edges that are within a plane parallel to the projection plane. Those remain parallel because their intersection point is infinite far away.

One option would be to change the camera to ortographic, but then you got no perspective at all.

There, One-Point-Perspective; camera need to be right on view axis.

http://i1135.photobucket.com/albums/m626/cabby24/Blender%20Pics%202010/1pt_pros.png

You can try learning to use Yafaray. It has a special camera mode (architectural camera) which has only one point perspective. Verticals remain perfectly vertical.
http://yafaray.org/documentation/userguide/objects#Architect

I guess this would be similar to a tilt shift lens when photographing an architectural structure.

thanks for the fast replies. I will keep the tip with yafaray in mind. At the moment ridix`s tip to align the camera right on view axis, suffices for my needs. thanks to you all. martin

At the moment ridix`s tip to align the camera right on view axis, suffices for my needs. thanks to you all. martin

If you want your object off-axis just use the perspective camera shift in the camera settings.
Movie http://download.blender.org/demo/test/2.43/lens_shift.mov