Follow Focus Gear Customizer by trinckle

About this generator

Follow Focus Gear Customizer by trinckle is a free browser tool that makes a closed follow focus gear ring for one specific camera lens. You measure the lens housing where the gear should sit, type that number into a short form and a 3D preview of the ring updates next to it. The page is a showcase for paramate, the configurator platform trinckle offers to businesses.

The gear is a solid ring rather than the adjustable strap gears often sold for camera rigs, so the fit depends on how well you measure. You enter the lens circumference (75 to 1500 mm) or switch to the diameter (23.9 to 477.5 mm), then set how wide the gear is, from 5 to 50 mm. Two more fields set the wall between the lens and the teeth (2 to 8 mm) and a small chamfer (0 to 1.8 mm). The page's FAQ gives the teeth as module 0.8, the usual size for follow focus units.

There is no account, no price and one output, an STL file. It suits filmmakers who shoot video on still-photo lenses without built-in gears and want a ring sized to each lens.

What you can make

• Follow focus gears for still-photo lenses
• Closed lens gear rings with module 0.8 teeth
• Lens gear rings from 5 to 50 mm wide

How to use Follow Focus Gear Customizer by trinckle

1. Measure the lens housing where the gear should sit
2. Enter the circumference, or switch the toggle and enter the diameter
3. Set the gear width, ring wall and chamfer if the defaults do not suit
4. Check the 3D preview and click Download .stl
5. Slice, print and slide the ring onto the lens