This Fuji lens is the hammer. A Dream! Focus TOP! Processing TOP !! Speed TOP. It's fun at the X-T1 to work with. I have otherwise only ever worked with the D800 and 70-200mm 2.8 lens! I have to say what has since brought Fuji on the market is already a hammer. Also I can no difference festellen between the two systems apart from the weight of what I no longer have to carry around with me! HAHAHA. After a four hours shooting is worth Fuji Gold. It is a true pleasure to work with this lens. The picture quality is at f 2.8 a dream come true and every eye is just sharp. It is with the X-T1 very well in the hand and each part to be moved is running very smoothly. I can only every Recommend even if the price is a bit high but this is also in this league OK .......