Well Crafted:The lens is very well crafted. Its all metal ,feels better in the hand than the native Fuji primes. It actually feels better built than most lenses. only weight 492 grams, with standard lens hood, perfect for outdoor portraits shooting. | STM: Faster and quieter stepping motor, provide more precise autofocus than old models .The auto focus is fast , on par with many native lenses. | 85mm F1.8 Aperture: The image quality on this lens is surprisingly good and it’s an all around solid performer , this lens offers excellent center and edge to edge sharpness and superb resolving power. F1.8 Aperture and 85mm focal length,give you soft and natural background blur which is ideal for portraits, delivers all the superb image resolution and contrast for you. | Precise Focusing : Right out of camera, the neutral quality of this lens gives skin a subtle sheen, making it and excellent choice for portraiture as well as black and white photography.The textured metal focus ring provides an exceptionally smooth experience and the 145.9° throw allows for precise focusing, even at closer distances where subtle nuances would be more noticeable. | Up to date：By continuous upgrade lens firmware to improve lens performance through USB port, and adapted to newest Fuji X-mount cameras (check the compatibility of your Fuji X-mount camera in the product description)