Sigma 30mm f/1.4 EX DC HSM Autofocus Lens for Nikon Digital Type: Standard & Medium Telephoto Lens Diameter: 62mm Compatibility: For Nikon Features: This large aperture 30mm F1.4 EX DC HSM lens is designed to match the APS-C size image sensors of digital SLR cameras. Two SLD glass elements are especially effective in the compensation of magnification chromatic aberration. Glass mold aspherical lens at rear group of lens reduces color aberration and provides high-quality