Overview
Optoma ZK521ST
The Optoma ZK521ST steps up from the ZK431ST with 5,000 lumens of true 4K UHD brightness, while keeping a short 0.79 throw ratio for space-constrained classrooms and conference rooms.
Vertical lens shift of 104%–125% adds installation flexibility beyond a fixed short-throw mount, backed by the same 30,000-hour DuraCore laser light source.
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