Focal Length: 42.4 - 84.5 F Number: 2 Zoom Ratio: 2x Zoom and Focus Adjustment: Motorized Lens Shift Range: Vertical: +/-60%, Horizontal: +/-25% Projection Ratio: 2.0 - 4.0 Throw Distance: 86.6" - 1,696.8" (2.2 - 43.1m) Projection Image Size (Diagonal): 50 – 500 inch