The 12mm f/2.8 ED AS NCS Fisheye Lens for Nikon F Mount with AE Chip from Samyang provides a 180º diagonal angle of view on full-frame cameras for an ultra-wide angle, distorted perspective that is useful for architectural interiors, landscapes and creative experimentation in any photographic application. The f/2.8 maximum aperture is effective in low-light situations and enables some measure of shallow depth of field control