Integrated micro-USB port for firmware updates.

Prime normal-length lens designed for full-frame format. When used on APS-C cameras, it has the equivalent perspective of a 75mm lens. Bright f/1.8 maximum aperture suits working in low-light conditions and also affords greater control over depth of field. 11 elements in 10 groups One extra-low dispersion elements and two high transparency elements reduce color fringing and chromatic aberrations in order to achieve a high degree of clarity and color accuracy. Two aspheric elements help to control spherical aberrations and reduce distortion in order to realize high sharpness and accurate rendering. HD Nano multilayer coating has been applied to individual elements to suppress flare and ghosting for greater contrast and color fidelity when working in strong lighting conditions. STM stepping motor enables quick, quiet, and precise autofocus performance along with full-time manual focus override. The internal focusing design maintains the overall lens length during use for improved handling and quicker response. Integrated manual aperture ring for tactile exposure control; this ring also features an 'A' position for automated, camera-based aperture selection.