Canon means uncompromised image quality. Start with the LV-7585's Genuine Canon Optics 1.3x zoom lens - a sharp, brilliant lens that lives up to Canon's unparalleled reputation for optical excellence. The f/1.7 projection lens is constructed from 13 elements in 10 groups. Although the lens uses a slightly smaller aperture - from the previous model's f/1.7 to f/1.8 - this has not reduced the projector's brightness due to the increased aperture ratio of the LCD panels. With a projection distance of 3.7 to 29.1 feet, the lens gives you a diagonal screen as compact as 31" and as big as 400".