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The VZLFC Electronic Follow Focus Control for Canon C100/C300 MK I & II from VariZoom uses a rotary encoder wheel as opposed to a rocker to precisely control the focus of your autofocus EF mount lens. VariZoom takes advantage of your camera's LANC control protocol and mated it to their encoder technology for a precise focus control unit that does not require external motors or batteries. It does however, require that you set your EF mount C100/300 to the "one shot" setting, and it worth noting that the focus control only works with EF mount autofocus lenses.
The VZLFC takes advantage of the built-in motors in autofocus EF mount lenses to control the focus, so it will not provide focus control with a PL mount camera. In addition to focus control, it features an indicator light for record status and low battery warning. You can also engage push auto iris, record, and camera on/off. It incorporates a 40" LANC cable, but you can extend the distance with an available (not included) extension cable. The controller incorporates a clamp with a maximum diameter of 1.25".It allows you to control focus with the variable-speed rocker and features camera on/off, a camera record/low battery indicator LED, iris up/down, buttons as well as push auto iris controls. The unit features a built-in clamp for your tripod handle or a stand, and can control your camera from up to 300 feet away by using optional extension cables.
Rotary encoded focus knob
Low profile record/pause button
Power on/off button for toggling camera into or out of standby mode
Push auto iris
LED light indicates recording status and low battery power
In the Box
VariZoom Electronic Rotary Follow Focus Control for Canon C100/C300 MK I & II (EF Mount)