no lens movement is felt. since everything is on the motor, you constantly do not get into focus. If you want to move a little closer - he is silent. twist harder - how it jumps from 5 m to 1.2 m. autofocus is kind of crazy. you press the button, and he 2! thinks for a second. I stand in one place. to the object somewhere 3.5m, I press auto focus, then 1.5m, then 6.7m. How is that? used on a sony fs 5 camera. there is a focus mag button / such an electronic enlargement so that the zoom does not drive / I press the button, bru focus, I press the button - NO FOCUS ! the whole picture is in soap. I begin to correct with my hand . well, you read above. with an extreme lack of lighting, the focus does not take AT ALL. +21dB/f 4.0. everything is the murder of a report. out of let's say 20 frames, 5 are definitely out of focus and 5 frames - the focus is not where it was directed. for staged shooting, the angle is too narrow at full zoom. with the zoom, the problems are the same - it is on the motor. even the ring on the lens. the zoom key on the lens is barely crawling. adjusting the speed on the camera does not give any effect. every day a complete neurasthenia. collided with several more people with the same pair: Sony fs5 and this lens. so they have the same problems! and the main claims to the focus! and all reporters. and everyone bought into the ads.