Der PC-Adapter dient der Perspektiv-Kontrolle speziell beim überblenden. Es lassen sich alle Schneider Projektions-Objektive separat in vertikaler und horizontaler Richtung shiften.
Die Scharfstellung der Objektive ist davon unabhüngig und ündert nichts an der exakten Position der Projektionsbilder.
Das Objektiv kann +/-  8mm in der Höhe, +8mm/-7mm Seitwärts und +/- 8mm Diagonal verschoben werden.

  The PC (Perspective Control) Adapter serves a dual purpose.
1.) To prevent screen image distortion (Keystone effect) which would be caused if the entire projector would have to be tilted up or down, or slanted sidewise towards the screen.
2. To precisely align screen images when two or more Projectors are used.
The PC Adapter can be used with all Schneider projection lenses for perspective control and aligning screen images for multi-image shows. It is placed between projection lens and projector housing and can be costumer installed. Permits lens optical axis to shift +/- 8mm horizontally, +8mm/-7mm vertically, +/- 8mm diagonally.