Leica doesn't make a lot of zoom lenses but they quite possibly make the best! Aside from its versatile focal length and superior optics the 70-210 f4 Vario Elmar shares many attributes with all other Leica R lenses. What other lenses can claim full performance at -13 to 140 degrees Fahrenheit? Or offer special protection from corrosion? How about remarkably high impact resistance? Yes, like we said, "...quite possibly the best!"