Optoma GT3900UHD Short Throw Projector vs Optoma ZH400 Laser Projector

Both are 4,000-lumen DuraCore laser DLP projectors rated for 30,000 hours, so brightness and lifespan are a wash. The GT3900UHD wins on image and placement: true 4K, a 0.49:1 short throw lens, 4.3ms game lag and a Golf mode. The ZH400 is a 1080p long-throw unit with a 1.1x zoom, HDR10 and 360-degree positioning, better suited to ceiling mounting in a meeting room or a large hall. Buy the GT3900UHD for a home theater, game room or golf sim; buy the ZH400 for a boardroom, classroom or install where the projector sits far from the screen.

• Choose the Optoma GT3900UHD if you want a big 4K picture from a few feet away, low input lag for gaming, or a golf sim setup.
• Choose the Optoma ZH400 if you need a 1080p workhorse mounted across the room or on the ceiling, with zoom to fit the screen.