What is a follow focus used for?

　　Follow Focus is also derived from the traditional movie shooting ancillary equipment. While we are using the camera for video, it is as useful as Focus. The current camera in the video capture auto-focus ability is not yet satisfactory, and can not achieve the practical application of the effect, so we better use Follow focus to improve the accuracy of focus control during shooting.

　　Follow focus is a ergonomic design, it changes the direction of the human hand when focusing on the lens focus, let us more convenient operation, but also reduces the direct manipulation of the human hand caused the screen shake. At the same time, the use of Follow focus and focus ring can also increase the focus of the lens stroke (relative to the movie lens, the focus of most camera lens stroke is too short), is conducive to precise control of the screen focus.

　　SK-F1X Follow Focus

　　The Sevenoak SK-F1X Follow Focus is a simple but useful follow focus built out of anodized aluminum construction. It is designed to attach to a single bar of the 15mm support system, which has several advantages. While changing lenses, you can simply release one knob with a simple twist and hinge the Follow Focus unit aside to access the lens without any obstruction. If the new lens has a different diameter, SK-F1X Follow Focus can be easily hinged in place to accommodate the new diameter of the lens with a one hand operation. Also, when the gear is not at the same distance, the unit can be shifted forward or backwards.

　　Follow Focus structure and design is also very simple, the core component is a corner gear box. Good little focus, a moderate damping, so that a variety of different lens with the coke feel becomes more consistent, user-friendly operation. In filming, the camera is usually controlled by the photographer, with a dedicated assistant following the camera. Sometimes in some small space or special point of view, in order to facilitate the operation with the coke, we will use a coke whip to extend Follow Focus control.

　　Follow focus plays a decisive role in the filming of the film, rarely used in civilian areas, so many people think this is an insignificant display. Indeed, people who play DV by the violation of the AUTO too deep, almost no sensory knowledge of the MF and rational understanding of the practice filming for the tape measure is even more incomprehensible, so the role of the chaser is also more aware of the unclear .

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