Lens library
Focus gears by lens
Saved openings, widths and focus travel for 3D-printable focus gears. Each entry says where its numbers come from. Pick your lens for a free slip-on ring, a clamp ring or hard stops for your focus motor.
Canon
- Canon 16–35 mm F2.8Ø 76 mm · 23 mm wide · 91°Owner draft · unverified
Leica
- Leica R 135mmØ 67.5 mm · 15 mm wideImported · not yet checked
- Leica R 19mmØ 72.5 mm · 10 mm wideImported · not yet checked
- Leica R 28mmØ 60.5 mm · 10 mm wideImported · not yet checked
- Leica R 35mmØ 67.5 mm · 16 mm wideImported · not yet checked
- Leica R 50mmØ 64.5 mm · 10 mm wideImported · not yet checked
- Leica R 90mmØ 69.5 mm · 10 mm wideImported · not yet checked
Sigma
- Sigma 18–35 mm F1.8Ø 79 mm · 25 mm wide · 123°Owner draft · unverified
- Sigma Art 105 mm F1.4 DG HSMØ 99 mm · 30 mm wide · 149°Owner draft · unverified
Not listed?
Measure your lens with a tape: the free focus ring takes a diameter or circumference, and the hard-stop generator guides you through measuring the focus travel.