Normal-length prime is designed for full-frame Sony E-mount mirrorless cameras, however can also be used with APS-C models where it provides a 75mm equivalent focal length. Bright f/2 aperture helps to achieve a more compact, portable form factor while also remaining versatile for use in a variety of lighting conditions. Planar optical design affords high sharpness and consistent performance throughout the focusing range to suit photographing at a wide range of imaging scales.. ZEISS T* anti-reflective coating has been applied to each lens surface to help minimize reflections and provide greater contrast and color fidelity. Manual focus design is benefitted by focusing and depth of field scales along with a 180? focus ring rotational angle and hard stops at both infinity and minimum focusing positions.. Manual aperture ring has clicked indicators throughout aperture range. Using the included De-Click Tool, this ring can be mechanically 'de-clicked' for smooth, silent rotation