ET-ELW03 allows to vary projection distance by adjusting the focal distance, which for this lens is 30mm. It has a standard-throw ratio (0.8:1) that fluctuates depending on the aspect ratio of projector. The ETELW03 zoom lens can compensate for miscalculations during installation.
Zoom lens for PTEX16KU projector
Allows to vary projection distance
Compensates for miscalculations during installation