The Panasonic ET‑ELT20 is a precision-engineered zoom lens designed to deliver exceptional flexibility and clarity for a wide range of Panasonic LCD projectors. Featuring a 1.6× optical zoom with a focal length range from 45.6 mm to 73.8 mm and a bright F‑stop of f/1.8–2.3, this lens enables clear and sharp projection across varying distances. Its throw ratio spans 2.8 to 4.6:1, making it ideal for medium to long-range installations in venues such as conference rooms, classrooms, and event spaces. Compact yet sturdy, the lens measures approximately 108 × 108 × 197 mm (4¼″ × 4¼″ × 7¾″) and weighs about 1.18 kg (2.6 lbs), ensuring ease of handling and installation. It is compatible with a wide array of Panasonic projector series, including PT‑EZ570, PT‑EZ580, and PT‑EZ770Z, offering versatility and reliability for demanding projection scenarios.