This 5515.49 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. Will this work with ronin's focus motor?

A: Yes, the Ronin S and RS2/SC2 focus motors have 0.8 MOD gears, as well as this Tilta Focus Gear Ring.

Q: 2. Do these work with the DJI Focus Motor and it's teeth? I have tried the Neewer and Smallrig versions and nothing has worked.

A: No, the Tilta Seamless Focus Gear Ring seamless rings are not compatible with the DJI Focus motors. seamless rings may not have long enough teeth for the motor to grip. We recommend using the following gears. DJI Ronin-S Focus Gear Strips (2-Pack) BH #DJGEARP19 • MFR #CP.RN.00000026.01

Q: 3. What size for canon fd 50mm f1.8?

A: This is the correct size for the Canon FD 50mm 1.8. The filter size for the lens is 52mm. Having the extra space will allow it to sit snug on the lens.

Q: 4. Will this work with the ronin rsc2 focus motor? seeing a lot about the tilta gears not lining up nicely

A: The gearing present on the SmallRig Seamless Focus Gear Ring (75 to 77mm) should not have an issue with the use of the DJI Ronin Focus Motor for RS 2 and RSC 2 on the DJI RSC 2 Gimbal Stabilizer.

Q: 5. Hi! Will this fit the Sigma 50-100mm lens? Thanks!

A: No, this would be too small on the Sigma lens and will not fit and it also happens to be the largest size in its brand.

Q: 6. Will this gear fit the 21mm f2.8 Zeiss Milvus ZE focus ring?

A: The Tilta Seamless Focus Gear Ring (72 to 74mm) is a little too big for the ZEISS Milvus 21mm f/2.8 ZE Lens. The correct size would be 69-71mm. BH #TITAFGR6971

Q: 7. Any experiences with the Sigma 18-35 and Sigma 50-100? Which size would be best?

A: The Sigma 18-35mm Art lens has a 78mm diameter, you would need BH #TITAFGR788 instead. While the 50-100mm has a 93.5mm diameter and you would need a universal gear like BH #WILU for that one. https://bhpho.to/3kOCoMI https://bhpho.to/309Ib7v

Q: 8. Gear sizes for Panasonic Leica 10-25mm f1.7?

A: You will need the 85-87mm Focus Gear Ring for the Panasonic Leica 10-25mm lens. Here are FAQs for the Tilta Seamless Focus Gear Ring. https://tilta.com/product_support/seamless-focus-gear-ring/

Q: 9. What is the correct size for the Sony FE 24-105mm f/4 G OSS Lens (it is listed incorrectly - I know because I purchased 2 and they are waaay too small)?

A: You should use the Tilta Seamless Focus Gear Ring (81 to 83mm).

Q: 10. I have the Canon 24-70mm USM lens which size would be best for the focus gear?

A: We have found the Canon EF 24-70mm f/2.8L II USM Lens to have an 82mm diameter for its focus ring. As such, the Tilta Seamless Focus Gear Ring (81 to 83mm) should work great for it.