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The Optoma ZK431ST-B is a true 4K UHD laser projector built for indoor golf simulators. Its 4,100-lumen DuraCore laser engine and 0.496:1 short-throw lens fill screens up to 300 inches from close to the impact screen, cutting shadows and freeing hitting space in tight rooms. A dedicated Golf Sim color mode and smartphone-based Smart Fit alignment target simulator setups, while 8.6 ms low input lag and dual HDMI 2.0 inputs make it usable for gaming and movies too. Against lamp-based short-throw rivals it wins on maintenance-free life and brightness, but it is a fixed short-throw unit with modest keystone range, so placement matters.
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The Optoma ZK431ST-B is a 4K UHD DLP projector with a DuraCore laser light source, made for indoor golf simulators. It renders 8.3 million pixels at 4,100 lumens and projects images up to 300 inches. A Golf Sim color mode tunes blue skies, shadows and grass-green tones for course rendering.
A 0.496:1 short-throw lens lets the projector sit close to the impact screen. This reduces shadows and club interference in tight rooms. Smart Fit uses a smartphone camera to detect the screen frame and correct image alignment automatically. Four-corner adjustment and ±15° horizontal and vertical keystone correction help square the image to the screen.
The laser light source is rated for up to 30,000 hours, with instant on and off and no lamp to replace. Input lag is as low as 8.6 ms, so the projector also suits gaming and general entertainment. It has two HDMI 2.0 inputs, plus USB-A, RJ45 LAN, RS232 and 12V trigger connections.
