According to Euclidean Geometry two unique points determine a line and three a unique plane in space. Suppose you have a high-end view camera such as the Toyo Robos, GX, or Sinar P, PII that provide for both base and/or axial tilts and wanted to set-up a unique plane of focus in space. How would you proceed? Would you determine the line of focus using base tilt, axial tilt, a combination thereof, or something else? What about those points falling in the foreground or background of the plane that you also want to be in focus?

Thomas