Panasonic ET-D3QT800 is a 3-Chip DLP projector zoom lens designed for Panasonic PT-RQ50K series projectors. It features lens memory and a stepping motor for motorized adjustment. The focal length ranges from 156.5 mm to 243.1 mm with an F-number of 2.5. Throw ratios depend on the projector aspect ratio, ranging from approximately 4.97:1 to 11.06:1 (product page lists 5.0–7.1:1 as a headline). Dimensions are 187 × 192 × 370 mm and weight is 8.0 kg.