Review on Samyang 12mm F2.8 Ultra Wide Fisheye Lens for Nikon DSLR Cameras - Optimized for Full Frame Compatibility by Rashan Jimenez

Amazing quality at a reasonable price! Super sharp and amazing color reproduction, this is the BEST fisheye available for FX cameras! You DO NOT NEED fisheye autofocus, set the focus just before infinity and stop at f/5.6 and it will be ultra sharp with everything in focus from 1ft to infinity, the Nikon version has a focus confirmation chip, so Even with manual focus, the camera will indicate when the desired area is in focus. Close the aperture ring and you can also control the aperture using your camera controls and everything. The lens Exif data is stored in your raw files so you can fine-tune them later or delete them with the software.