This 5515.29 Zoom/Focus Gear lets you adjust the focal length or focus of a lens used inside an Ikelite underwater camera housing. For lens and port compatibility, consult the Port Chart for your housing.

Focus or Zoom Lens Inside Housing

Related Questions and Answers

Q: 1. Which size should I get for a 62mm lens?

A: The Tilta Gear Rings are pretty stiff and you should get the 62.5 to 64.5mm size.

Q: 2. What size diameter for the sony 70-200 2.8 zoom ring? I got two, only one fits for the focus

A: The Sony 70-200 F2.8 lens has not been tested by Tilta. Please use this link for help with measuring your lens model. https://bit.ly/3LQFqNQ

Q: 3. I need a focus rubber ring for Loxia 21mm lens, any one can tell me what size I can use ? thanks

A: You need a rubber ring that can accommodate 62mm, which is the diameter of the lens.

Q: 4. Will this fit the Voigtlander Nokton 17.5mm f/0.95? This size was the google result, but I can't find the info anywhere.

A: The Voigtlander Nokton 17.5mm f/0.95 Lens for Micro Four Thirds Cameras has an outer diameter of 63.5mm. You would need the Tilta Seamless Focus Gear Ring (62.5 to 64.5mm) for this lens.

Q: 5. Does this fit the Canon EF 24-70mm F/2.8L II?

A: No, the SmallRig Seamless Focus Gear Ring (81 to 83mm) is too small to fit around the focus ring of the Canon EF 24-70mm f/2.8L II USM Lens, which according to our specs is 88,5mm ins diameter. You may be able to make the SmallRig Seamless Focus Gear Ring (81 to 83mm) work by stretching it out, but I recommend using a more size appropriate gear ring instead.

Q: 6. What ring size should I get for a Sirui 24mm lens?

A: Many lenses have not been tested for their circumference. Tilta has a ruler for finding out the circumference of your lens model when using the Tilta Seamless Focus Gear Rings. How can I measure and find the right focus gear ring for my lens? https://bit.ly/49uzp62

Q: 7. What is the correct size for the Sigma Art 50-100mm f/1.8 Lens EF focus ring?

A: Unfortunately Tilta does not list the Sigma Art 50-100mm lens as a compatible lens with these focus rings. However a universal ring will work with this lens, such as the Tilta DSLR Lens Follow Focus Adapter: https://www.bhphotovideo.com/c/product/1442786-REG/tilta_fr_t03_photographic_lens_follow_focus.html https://tilta.com/support/what-size-rings-are-compatible-with-sigma-lenses/

Q: 8. Does the system allow for setting more than 2 focus points currently? Is that something that will be added later through a firmware update? Thanks!

A: At this time it is limited to 2 focus points. We do not know if it is possible for Rhino to add more with firmware.

Q: 9. What size ring is good for sigma 18-35

A: The Tilta Seamless Focus Gear Ring (53 to 55mm) would not fit the Sigma 18-35mm f/1.8 DC HSM Art Lens. We recommend using the Tilta Seamless Focus Gear Ring (72 to 74mm) with the Sigma 18-35mm f/1.8 DC HSM Art Lens.

Q: 10. WHAT IS THE DIFFERENCE BETWEEN USING THIS SET AND Ikelite SLR Zoom Sleeve B&H # IK5509.28 MFR # 5509.28 IN A NIKON 3200/18-55mm?

A: 5509.27 is for lenses that feature a zoom ring that is up to 2.7 inches in diameter while the 5509.28 is for larger lenses that feature a zoom ring up to 3 inches. Nikon's 18-55mm lenses are smaller in diameter so we suggest using the 5509.27. It comes with friction foam that can be adhered to the spring loaded black clamp to offer a tight fit around the lens.