The Angénieux Type EZ 1 for FF / VistaVision and S35 format is a standard zoom lens with a zoom factor of 3x. Its focal range and aperture are set to 45-135mm F2.8/T3 for the FF/VV covering an image circle up to 46mm diagonal and 30-90mm F1.9/T2 for the S35 covering an image up to 30mm. By exchanging the rear lens group, the lens can be switched from FF/VV to S35 and from S35 to FF/VV