Leica 90mm F2.8 Elmarit M A fine 90mm Lens that is small & light Fast enough for most applications Very Popular Great lens for Scenics & Poeple   4 Elements in 4 Groups Very Small & Light Filter Size is 46mm Apertures from F2.8 to F22 with Half clickstops Focuses from 1 Meters to Infinity Built In Lens Hood Superb Image Quality throughout the Aperture Range Great for Scenics/Landscapes and People