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if you stand in the middle of a sidewalk and look down it will get smaller and so the vanishing point should be in the middle of the side walk. But if you stand a little bit to the right where will the vanishing point be (in this case i want the vanishing point to change and not the person's viewing position)?
and how far do you put the two vanishing points? will it always be on the edge of the paper?
and what are the things that are excluded from the 2 point and middle vanishing points?such as roof tops.
can you move the middle vanishing point away from the middle?
Last edited by Vay; October 17th, 2009 at 07:23 PM.
you can have as many vanishing points in an image as you want, as a vanishing point just refers to an angle.
So say you have 2 cubes sitting on the ground, but rotated differently, you would need to set up two sets of vanishing points.
One point perspective is the same as two point, except that one of the points are parallel to the "lens" so all the horizontal lines are parallel in the drawing.
As far as how wide across, well as a general rule they will be far off the page, in which point you just need to practice approximating it. Try reading up on lenses, they will explain why the vanishing points get wider and closer together.
(read the focal length parts http://en.wikipedia.org/wiki/Photogr...d_focal_length)
Last edited by Muz; October 17th, 2009 at 08:17 PM.
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Vay, I've created a diagram for you.
But again remember: the distance of the eyeball from the Picture Plane fixes the geometry of everything that you are doing.