The Panasonic ET-C1T800 is designed for projectors, featuring a zoom lens system that enhances your visual experience. With a lens aperture ranging from f/1.9 to f/2.5, it allows for excellent light transmission, making images bright and clear in various lighting conditions. The lens includes an anti-reflection coating to improve image quality by reducing glare and unwanted reflections. The throw ratio of 3.30 to 6.60:1 provides flexibility in installation, enabling optimal placement in different environments.