Middle Focus Zoom Lens for VPL-FH300L and VPL-FW300L VPLLZ4025 Middle focus zoom lens for the VPL-FH300L and VPL-FW300L larger venue projectors. 2.5 - 4.5:1 Throw ratio 148 x 133 x 243mm General Specifications Detail: Weight 2800g Zoom 1.84 Throw Ratio 2.5-4.5:1 F 2.2-3.1 f number (mm) 64.59-124.11 Power/Manual Power Zoom/Focus/Shift Projector Screen Size 40-600" Shift (V), (H) +/- 3/5, +/- 1/10 Dimension (WxHxD mm) 148 x 133 x 243 Brightness 80%