BenQ SP840, 4000 ANSI lumens, DLP, 1080p (1920x1080), 3000:1, 24 - 300", 1.073 billion colors BenQ SP840. Projector brightness: 4000 ANSI lumens, Projection technology: DLP, Projector native resolution: 1080p (1920x1080). Light source type: Lamp, Service life of light source: 2000 h, Service life of light source (economic mode): 3000 h. Focal length range: 23.5 - 28.2 mm, Aperture range (F-F): 2.50 - 2.76, Zoom type: Manual. Analog signal format system: NTSC, PAL, SECAM, Supported graphics resolutions: 1920 x 1080 (HD 1080), 1920 x 1200 (WUXGA), 640 x 480 (VGA), Supported video modes: 1080i, 1080p, 480i, 480p, 576i, 576p, 720p. Serial interface type: RS-232, USB connector type: USB Type-B https://www.expertreviews.co.uk/tvs-entertainment/projectors/50393/benq-sp840-review The BenQ SP840 is a stunningly bright projector with a 4,000 lumens lamp. It means that you should be able to use it in any room without having to dim lights or close curtains. This brightness also makes the SP840 far more suitable as a living room TV ... The SP840 is clearly designed for use in well-lit public areas, but the rainbow effect and high price were more than enough to put us off. ...