Samsung NX1 2.2 High Definition Super Telephoto Lens (Only for Lenses with Filter Sizes of 40.5, 43, 52, 58 or 67mm) 2.2x High Definition Telephoto Lens designed to mount atop traditional SLR lenses. Optimized For Mega Pixel Photography. High Definition Digital Lens (3 Groups/3 Elements). MultiCoated Optical Glass Uses 72mm Filters. Extreme Speed Auto Focus yields crisp and clear images.