The Rollei 150mm f/2.8 HFT AV-Xenotar Projection Lens is a standard lens for projection in normal sized rooms.
Using the very latest computing techniques, Rollei has developed a number of lenses in Brunswick especially for the Rolleivision 66 dual P. These fast Rollei AV-Apogon projection lenses are specifically for AV application and for use in teaching and science. Their performance is impressive.