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Tech with a tech! Professional Divine Audio Visual techs compare the Epson 4050ub vs Epson 3800 Epson 4050 Specs: Specifications Projector: Projection System: Epson 3LCD, 3-Chip Design Projection Method: Front / Rear / Ceiling mount Driving Method: Epson Poly-silicon TFT Active Matrix, 0.74-inch wide panel Color Brightness - Color Light Output: 2400 lumens4 White Brightness - White Light Output: 2400 lumens4 Aspect Ratio: 16:9 widescreen (4:3 resize, 16:10 resize); Compatible with 4:3 with Normal, Full or Zoom Modes Resolution: 4K Enhancement1 (1920 x 1080 x 2); Max. Resolution: 4096 x 2160 Lamp Type: 250 W UHE Lamp Life: Up to 5,000 hours (ECO Mode); up to 4,000 hours (Medium Mode); up to 3,500 hours (High Mode)7 Throw Ratio Range: 1.35 – 2.84 Keystone Correction: Vertical: ±30 degrees (Manual) Contrast Ratio: Up to 200,000:1 Color Processing: Full 10-bit (partial 12-bit) Color Reproduction: Full-color (up to 1.07 billion colors) Epson 3800 Specs Specifications Projector: Projection System: Epson 3LCD Projection Method: Front / rear / ceiling mount Driving Method: Epson Poly-silicon TFT Active Matrix, 0.61" - wide panel Color Brightness - Color Light Output: 3,000 lumens3 White Brightness - White Light Output: 3000 lumens3 Aspect Ratio: Native: 16:9 widescreen (4:3 resize,16:10 resize); compatible with 4:3 with Normal, Full or Zoom Modes Resolution: 4K Enhancement1 (1920 x 1080 x 2) Maximum Resolution: 4096 x 2160 Supported Resolution: 3840 x 2160, Full HD 1080p/i, HD 720p, 576p/i, 480p/i Resize: 16:10, 4:3 Lamp Type: 250 W UHE Lamp Life: ECO mode: Up to 5,000 hours6 Medium mode: Up to 4,000 hours6 High Mode: Up to 3,500 hours6 Size - projected distance: 0" – 300" (Zoom: Wide and Zoom: Tele) Keystone Correction: Vertical/Horizontal: ± 30 degrees (manual) Contrast Ratio: Up to 100,000:1, Auto Iris on Color Processing: Full 10-bit (partial 12-bit) Color Reproduction: Full-color (up to 1.07 billion colors) General: Operating Temperature: 41 ° to 95 °F (5 ° to 35 °C) Weight: 15.2 lb Security: Kensington security lock port Warranty: 2-year projector limited warranty Extra CareSM Home Service program PrivateLine® dedicated toll-free support (U.S. and Canada only) 90-day limited lamp warranty Projection Lens: Type: Optical Zoom (manual)/Focus (manual) F-number: 1.49 – 1.77 Focal Length: 18.2 – 29.2 mm Zoom Ratio: 1 – 1.62 Throw Ratio Range: 1.32 – 2.15 Lens Shift: Vertical: -60.0% to +60.0% (H Center) manual Horizontal: -24.0% to +24.0% (V Center) manual Lens Cover: Cap Specs courtesy of epson.com