The LuxGear Follow Focus Gear Ring from Cool-Lux is a seamless lens gear for lenses with a focus-barrel diameter of 70 to 71.9mm. It features standard 0.8-mod/32-pitch geared teeth that makes it compatible with cine-style follow focus systems. The gear slides onto your focus ring from the front or back of the lens and holds securely without the clamps, screws or zip ties that can interfere with your follow focus and limit your lens's rotation.

This gear is precision molded in high-durometer silicone and is available in 16 sizes, each designed to fit lenses within a two-millimeter diameter range, ensuring a tight compression fit on the focus barrel. To find the appropriate sized gear for your lens, please see the lens compatibility chart and sizing tools accessible by clicking on "Guides & Manuals."

Lenses with focus barrel diameter of 70 to 71.9mm, such as
Zeiss Planar T* 85mm f/1.4 ZF & ZF.2
Zeiss Makro-Planar T* 50mm f/2 ZF & ZF.2
Zeiss Distagon T* 18mm f/3.5 ZE
Zeiss Distagon T* 21mm f/2.8 ZE
Zeiss Distagon T* 25mm f/2 ZF.2
Zeiss Planar T* 50mm f/1.4 ZE
Nikon 60mm f/2.8D Micro

0.8-mod/32-pitch geared teeth for compatibility with any standard follow focus system

Precision-molded, high-durometer silicone construction

Securely fits on the lens' focus barrel

Compression fit allows for easy tool-less installation and removal

Continuous 360° of rotation

Related Questions and Answers

Q: 1. would this fit the 24-105 sigma art lens?

A: No. It is too small. The Sigma Art Lens diameter is 88.6mm and this ring is for 82-83.9 mm lenses.

Q: 2. Would these also fit the other Loxia lenses? I believe they have identical barrel diameters.

A: Yes these lens gears should work on any of the current Loxia lenses.

Q: 3. Does it fit with the Canon 17-40 f4 L series lens, 24-105 f4 L series and 16-35 f4 L series? thanks

A: This ring is compatible with the 17-40mm F4 lens. However for the 24-105 F4 and the 16-35mm F4 you will need the Gear Ring that works with an outer diameter of 82 to 83.9mm which is BH #COLG8283. https://bhpho.to/2N5CJfx

Q: 4. Will this fit the Tokina 11-16 atx-i 11-16 f2.8 CF lens for Canon EF?

A: 123

Q: 5. As for the Sigma 18-35mm Art lens, will it fit both rings (zoom & focus).... or is the zoom diameter different from the focus diameter?

A: zoom is different, smaller. my caliper measures 75mm.

Q: 6. Don’t see the Sigma 28-70 E mount listed. Which one would fit it?

A: Unfortunately , there are many untested lens models. However, Cool Lux offers a printable Luxgear ruler to measure lenses that are not on the tested list. RULER: https://bit.ly/3UvXRzb

Q: 7. Does this work with the Sigma 18-35 Art lens, considering it has 72 mm in diameter?

A: You chose wisely. This gear is listed by the company to fit the Sigma 18-35mm.

Q: 8. Will this ring fit the focus ring on a canon 100-400 L IS ii?

A: It will not, this ring is far too small for that lens. The Canon EF 100-400mm f/4.5-5.6L IS II USM Lens, BH #CA1004002LIS, has an outer diameter of 94mm. Instead we recommend a Universal Lens Gear like BH #WILU. https://bhpho.to/2mtNn2G

Q: 9. Will this fit a Canon 17-55mm f/2.8 IS EF-S?

A: It will not. The Canon 17-55mm F/2.8 has a 83.5mm diameter. Instead you would need B&H # COLG8283 which works with lenses between 82 to 83.9mm. https://bhpho.to/2wf9Uo5

Q: 10. Is the rubber strong enough to resist the torque of a Title Nucleus motor? (Title rings are not strong enough even if they are 0.8)

A: The Cool-Lux LuxGear gear rings are designed to be compatible with all standard follow focus motors.