
The zoom lens allows to vary projection distance by adjusting the focal distance and thus compensating miscalculations during installation. The lens has a standard throw ratio that fluctuates depending on the aspect ratio of the projector. ET-ELW02 Features: Zoom Lens, Designed for PT-EX16K & PT-EX12K Projectors, Focal Length: 52 to 68 mm, Varies Projection Distance - By Adjusting the Focal Distance, F 2.5 - 2.9 Aperture, Zoom Ratio: 1.3:1, Throw Ratio: 1.4 - 1.8:1, Quality Optics Maintains High-resolution Imagery, Durable Construction, Works With The Following Models: PT-EX16K PT-EX12K"
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