Super prime lens with 1A imaging performance as I've imagined this lens. Sitting at my D600 nice and light and the AF very well, just like my AF-S 50mm 1.8g or AF-S 85mm 1.8g quickly and quietly awesome. Have tested the imaging performance with the AF-S 18-35mm at 35mm 3,5-4,5G and can tell the prime lens is much better especially the corners are sharp cracking. I'm thrilled and would recommend it to everyone.