"The Sinar p relies on a patented tilt mechanism that is neither a central nor a base tilt but uses asymmetric image axes in the film plane. This ensures that image points on these axes remain sharp during every tilt of the image standard for sharpness distribution control (the Scheimpflug or converging planes principle) or perspective adjustment. The effects of swing and tilt are directly observable on the screen. You can thus stop the tilt at exactly the right point. The sequential swings and tilts about the horizontal and vertical axis, greatly simplify what used to need complex focusing in planes inclined about two axes. All adjustment mechanisms have precision central engagements. The operating controls are mounted at the right of the camera for rapid one-hand operation. All adjustments are clearly shown on large scales."