The Tamron A14 AF XR Di II LD lens is a compact and versatile lens. This aspherical macro lens features 11.1 times zoom and is equipped with Extra Refractive Index glass, giving you excellent close-ups with minimal aberrations. The three aspherical hybrid elements and two Low Dispersion (LD) glass elements of this Tamron lens for Pentax further minimize spherical and chromatic aberration to give you amazing optical results. This aspherical macro lens has a magnification ratio of 1:3.7 and a minimum focusing distance of 45 cm, making it ideal for macro photography. Further, a maximum aperture of f/22 and minimum aperture range of f/3.5-6.3 make this Tamron lens for Pentax suited for photography of moving subjects even in dark conditions. Enjoy the world of photography with the Tamron A14 AF XR Di II LD.