BENQ MW560 WXGA BUSINESS AND EDUCATION PROJECTORDisplay Brightness (ANSI lumens) 4000 Native Resolution WXGA (1280x800) Native Aspect Ratio 16: 10 Contrast Ratio (FOFO) 20,000: 1 Display Color 30 bit (1. 07 billion colors) Light Source Lamp Light Source Life a. Normal 6000 hrs, b. ECO 10000 hrs, c. SmartEco 10000 hrs, d. LampSave 15000 hrs Optical Throw Ratio 1. 55~1. 7 Zoom Ratio 1. 1x Lens F # = 2. 56 ~ 2. 68, f = 22 ~ 24. 1 mm Projection Offset (Full Height) 100% Keystone Adjustment 1D, Vertical