Lens library · Canon
Canon EF 24-105mm f/4 L IS II USM
Make a focus gear for your lens. Start with the measurements below, check the fit on your copy, and download a ring for your own printer.
| Mount | Canon EF |
|---|---|
| Version | EF |
| Focus-ring contact diameter | 82.3 mm |
| Clamp opening (+1 mm allowance) | 83.3 mm |
| Focus mechanism | Focus mechanism not yet confirmed |
| Focus-ring verification | Not verified |
| Zoom-ring contact diameter | 80.3 mm |
| Zoom-ring verification | Not verified |
Not verified by Focus Rings. Lenses vary between versions and copies: measure yours with a tape before printing.
Choose your ring
Added hard stops are for mechanically coupled focus rings without usable end stops. They are unnecessary on lenses with built-in stops and unsuitable for focus by wire. This preset is offered for clamp and slip-on rings.
Several lenses? Every further clamp or hard-stop ring in the same order costs €6.90. Keep one outside diameter and your focus motor stays in place when you swap lenses.
Before you print
- Check the focus-ring diameter on your copy. A tape circumference must be divided by π to obtain its diameter.
- Print a free test ring first. Material, printer and shrinkage change the fit.
- Module 0.8 teeth fit standard follow focus units and focus motors from ARRI, DJI, PD Movie and Tilta.
- New to this? Read how to measure a lens for a focus gear.