BenQ SP830, 3500 ANSI lumens, DLP, WXGA (1280x768), 2000:1, 635 - 7620 mm (25 - 300"), 20 - 100 m BenQ SP830. Projector brightness: 3500 ANSI lumens, Projection technology: DLP, Projector native resolution: WXGA (1280x768). Light source type: Lamp, Service life of light source: 3000 h, Service life of light source (economic mode): 4000 h. Focal length range: 22 - 26.06 mm, Zoom ratio: 1.16:1. Serial interface type: RS-232. RMS rated power: 4 W http://www.projectorreviews.com.au/reviewsp831sp830.htm The BenQ SP831 utilises the latest DLP technology with a 6 segment colour wheel eliminating rainbow effects seen in its predecessors (PB8250, PB8260) and some older DLP models. Combined with 10-bit image processing, which accurately renders over 1.07 b...