Specification Brand : GOWE BulletPoint1 : A follow focus is a focus control mechanism used in film and video cameras. It is ergonomic rather than strictly necessary; in other words it does not contribute to the basic functionality of a camera but instead allows the operator to be more efficient and precise. It is usually operated by a focus puller but some camera operators prefer to pull their own focus .The mechanism works through a set of gears on the follow focus that are attached to teeth on the focus ring of the lens. BulletPoint2 : These gears feed to a wheel which, when turned by a focus puller, will spin the teeth and thus the ring on the lens. This FOTGA DP500IIS follow focus is upgraded based on the previous DP500II version follow focus.It is consisting of a dampened gearbox.There is a button downside can adjust the tension of of the gearbox to reach 2 dampen level.Besides,the inner structure of DP500IIS follow focus is improved, BulletPoint3 : which ensure much more accurate operation for your work.Further more,the gear wheel on it can be detached and insalled in other side,which makes it suitable for both left-hand and right-hand photographer.Material: Completely metal (Gear part is of brass and steel,other part is of aluminum) Gear drive can be mounted from both side.(Works for both right-handed and left handed) BulletPoint4 : This set includes flexible gearbelt can be used with any zoom or prime lenses with a wide range of lens diameters(any size from 46 to 110mm); Adjustable locking systems Mounts onto 15 mm Rod Support (60mm center to center difference). Compatible with industry stand 15mm rods; MOD Drive Gear: Industry standard 0.8; Rail Distance: 60mm BulletPoint5 : Rail Diameter: 15mm; Suitable for:All DSLR cameras, Vedio cameras; 1 x Dampen DSLR Follow Focus ExternallyAssignedProductIdentifier1 : 0827674756626 ExternallyAssignedProductIdentifier2 : 827674756626 ItemName : GOWE Dampen Follow Focus for DSLR HDSLR HDV 5DII III 7D 15mm Rod ItemTypeKeyword : camera-lens-rapid-focusing-levers Manufacturer : Gowegroup PartNumber : GWE-1029127 ProductDescription : A follow focus is a focus control mechanism used in film and video cameras. It is ergonomic rather than strictly necessary; in other words it does not contribute to the basic functionality of a camera but instead allows the operator to be more efficient and precise. It is usually operated by a focus puller but some camera operators prefer to pull their own focus .The mechanism works through a set of gears on the follow focus that are attached to teeth on the focus ring of the lens. ProductSiteLaunchDate : 2016-07-31T04:40:52.848Z Voltage : 230 volts