Focal Length: 25.5 - 31.8 F Number: 2 Zoom Ratio: 1.25x Zoom and Focus Adjustment: Motorized Lens Shift Range: Vertical: +/-60%, Horizontal: +/-25% Projection Ratio: 1.2 - 1.5 Throw Distance: 51.2" - 637.8" (1.3 - 16.2m) Projection Image Size (Diagonal): 50 – 500 inch