An excellent, fast full-frame prime for Sony mirrorless bodies. Resolves well, even on high-megapixel sensors such as the A7RV. I have priced this well below its market price and below the Sony GM 35mm F/1.4. The Sony lens is superior in many aspects, but this is a great option for those who would like a fast lens without breaking the bank. Includes an ALPHAGVRD Vinyl skin with a metallic finish. This removable skin protects the lens from bumps and scratches, and adds a small barrier against the elements.