Brightness (ANSI lumens): 4000, Native Resolution: WXGA (1280x800), Native Aspect Ratio: 0.673611111111111, Contrast Ratio (FOFO): 20,000:1, Display Color: 30-bit (1.07 billion colors), Light Source: Lamp, 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): 1, Keystone Adjustment: 1D, Vertical ± 40 degrees. BenQ only uses high-quality glass lenses to minimize chromatic aberration, ensuring long-term image quality in brilliant clarity. No more fuzzy text or images.