Panasonic PT-FRZ50B pumps out bright and sharp 1920x1200 resolution images at an aspect ratio of 16:10. The projector is in a completely solid state and will never require a lamp replacement. The light from its bank of blue diode lasers goes through a phosphor wheel and a colour separation wheel to create beams of yellow, blue, green and red light that are bounced off of the imaging chip and on to the output lens. Panasonic's Failover Circuitry takes advantage of the projector's multi-diode laser architecture, assuring that should one fail, the remaining diodes keep working and help maintain high brightness.Overall, the PT-FRZ50's specifications stand out with a impressive rated output of 6,000 ISO21118 lumens (essentially equivalent to ANSI lumens) or 6,200 centre lumens. Its rated contrast ratio is 20,000:1. In real-world use, it actually put out a lot more lightThe projector is able to work with up to 4K video signals at up to 60 frames a second, which it accepts via its HDCP 2.3-compliant HDMI and DIGITAL LINK HDBaseT ports and displays at its WUXGA native resolution. The connection panel features two HDMI inputs in total, plus two VGA and a composite video input. The PT-FRZ50 is also one of the rare commercial projectors offering the option of HDMI-CEC control via its HDMI ports. There are 3.5mm and RCA audio-in jacks and a 3.5 mm audio-out; the projector lacks any internal speakers. In addition to a RS-232 serial port, the PT-FRZ50 has a Type A USB 5 volt/2-amp plug to power an accessory, though the USB doesn't support any internal media player to display content from a thumb drive or work with a mouse for streamlining navigation of the projector's menu.