Ultimaxx 25mm f/1.8 Manual Lens for Sony E Mount (NEX) Short Description Compact designed for APS-C-format Sony E-mount mirrorless cameras and provides a 37.5mm equivalent focal length. Bright f/1.8 maximum aperture benefits working in difficult lighting conditions and also offers improved control over depth of field for selective focus applications. Rounded 12-blade diaphragm makes for a smooth and pleasing quality of out-of-focus blur in a photograph Multi-coated anti-reflection design delivers virtually no lens flares, delivering crisp high-quality images This lens is fully manual and does not have a CPU contacts, please switch your camera to M (manual) mode.