Looking for spectacular, large images from only inches away? The Optoma ZU500UST Ultra Short Throw WUXGA Laser Multimedia Projector can create large projections in space-constrained environments with its ultra short . 25: 1 throw ratio. Images are very bright thanks to the 5, 000 lumens and 100, 000 to 1 contrast ratio. This projector is ideal for classrooms, meeting rooms, boardrooms, and digital signage applications. Its integrated PC-free image and document viewer provide direct viewing of office documents, PDFs, images, and presentations from any USB storage device. 4 corner geometric correction enables quick and easy image adjustments from any of the corner points of the image. Plus this projector with its laser light source can run 24 hours a day in standard orientation, making it ideal for applications that require prolonged periods of use. Robust input options include HDMI, VGA, and composite for connectivity to digital and analog video sources. LAN connectivity enables easy control via telnet and Crestron for managed installations.