You Can Almost See Yourself in the Shot with the Samyang 12mm f2.8 Fisheye Lens
Amazon.com : Rokinon 12mm F2.8 Ultra Wide Fisheye Lens for Sony E Mount Interchangeable Lens Cameras (NEX) - Full Frame Compatible : Electronics
Samyang AF 12mm F2 Review - DustinAbbott.net
Amazon | Samyang 12mm F2.8 Ultra Wide Fisheye Lens for Sony E Mount Interchangeable Lens Cameras (NEX) - Full Frame Compatible [並行輸入品] | カメラ用アクセサリキット 通販