Normal-length prime is designed for APS-C-format mirrorless cameras and provides a 52.5mm equivalent focal length to full frame Manual focus design for smooth, and refined control. Permits working with subjects as close as 11\" away. 10-blade diaphragm contributes to a pleasing bokeh quality. Bright f1.4 maximum aperture excels in low-light conditions and also affords increased control over depth of field. Sonnar optical concept promotes a high degree of sharpness, low distortion, and accurate rendering