• Schneider Kreuznach 40-80mm LS f/4.0-5.6 Zoom lens performs with ultra sharp rendition on all focal lengths. The optical quality of this zoom lens is comparable with what you would expect from a genuine prime lens.In combination with the Schneider Kreuznach 75-150mm LS f/4.0-5.6 Zoom, the focal length range is complete, from 40mm to 150mm with only two lenses.