Rokinon's 75mm F1.8 Full Frame Prime Telephoto Lens for Sony FE pairs a sophisticated optical construction to provide excellent performance and versatility. It is constructed of 5 special elements and is ultra multi-coated to create results with incredible sharpness, low chromatic aberration, and greater contrast and color fidelity. Its portability and performance can also be enjoyed on Sony E mount APS-C sensor models where it performs as a short telephoto with a focal length equivalent of 112.5mm.