The newly designed high definition ED lens in Vixen's ED103S gives excellent optical performance in a short optical tube for easy handling. The new ED lenses feature brighter images from the shorter f/7.7 focal ratio and capture crisp, pinpoint star images for your eye’s enjoyment. Vixen's ED glass produces clear and high contrast viewing, virtually free of false color. The design uses newly developed, environmentally friendly glass technology, free of hazardous lead that helps to support a cleaner global environment. |