On 10 Mar 2003 at 7:23, Mishka wrote: > fisheye with no distortion is no more oxymoron than rectilinear with no > distortion. > it is not possible to map 3d world as we see it (hemisphere) on a plane with no > distortion. from this point of view, rectilinear is as bad as fisheye, just > different. when speaking of lenses, "no distortion" usually means "no deviation > from the idealized mapping", for rectilinear being x=t*tan(theta), and for > fisheye x=r*theta or x=r*sin(theta).
View a photo rendered using a rectilinear lens from the appropriate distance with one eye and it's as true in geometry as the real world, fisheye renderings are not at any distance using one eye or two. � Rob Studdert
