Optoma UHD50 4K Home Theater Projector

• 2400 Lumens
• 5,00,000:1 with contrast on
• Resolution 4k Ultra HD 3840×2160-8.3M pixel images on the screen
• Lamp life for up to 15,000 hours
• Zoom Ratio;1.3x
• CInputs: 2 x HDMI 2.0, 1 x VGA (YPbPr/RGB), 1 x Audio 3.5mm
• Outputs: 1 x Audio 3.5mm, 1 x S/PDIF, 1 x USB-A power 1.5A
• Control: 1 x USB-A service, 1 x RS232, 1 x RJ45, 1 x 12V trigger

Zoom lens light loss: The UHD50 has a 1.3x zoom lens that loses 11% of the projector's potential light output at the telephoto end compared to the wide angle end.

4K HDR Performance: On the UHD50, the HDR picture is a moderately higher contrast image than you get with non-HDR sources. So it is an appealing feature, and combined with the 4K resolution it delivers a beautiful picture for the money.