Each lens in the M Series suite of lenses includes a true Intelligent Lens System (ILS)™. The ILS automatically recognizes and calibrates a lens when it is installed. Stepper motor-based encoding ensures that motor drift does not occur, as typically found with DC-encoded motors, providing accurate and repeatable recall of all lens offset, zoom, and focus positions. 

When used with Christie M Series HD/WU products, this ILS zoom lens has a 1.16-1.49:1 throw ratio. If used with any Christie M Series SXGA+ products, the ILS zoom lens will provide a 1.25-1.6:1 throw ratio.