This Ikelite 5515.49 Zoom Focus Gear for Underwater Photographylets you adjust the focal length or focus of a lens used inside an Ikelite 5515.49 Zoom Focus Gear for Underwater Photographyunderwater 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. What are the correct filter sizes for? Sony 16-55 mm f/2.8 G Sony 70-300mm f/4.5-6.3 G OSS Sigma 16mm f/1.4 E Sigma 30mm f/1.4 E

A: The Tilta Seamless Focus Gear Ring size for the 70-300mm Sony lens is gear model B&H # TITAFGR8183 https://bhpho.to/40mBR9i All the other lenses on your list would need to be measured for the correct size. I have included a link to the ruler and tested lens list below: How to measure: https://bit.ly/3JZlfiH

Q: 2. Will this fit the focus ring on Zeiss Milvus 85mm f1.4 Planar EF? Many thanks.

A: The Tilta Seamless Focus Gear Ring (88 to 90mm) will not fit because the ZEISS Milvus 85mm f/1.4 ZE Lens for Canon EF has a diameter of 113 mm. Use Wide Open Camera Universal Lens Gear BH #WILU • MFR #605859.

Q: 3. 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: 4. 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: 5. will this 75-77 gear ring be compatible with the Tamron 70-200 G2 lense? Or should I look for the next size up?

A: The Tamron 70-200mm G2 lens has not been tested for gear size. Please measure your lens for the correct SmallRig Seamless Focus Gear Ring size. Please note this ruler should work with both Smallrig, and Tilta Seamless gear rings: https://bit.ly/4317M0x

Q: 6. 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: 7. The straps can be released with ease from lens, to be reused on next occasion?

A: Yes they can be.

Q: 8. 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: 9. 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: 10. Which ring size I should get for Sirui 50mm anamorphic lens?

A: The following focus gear ring should work https://bhpho.to/3e64SPM, as the filter thread of the lens is 67mm, but you may also opt for a slightly smaller one if this one still feels a little loose. Unfortunately, the manufacturer only provides details of the front, outermost diameter, which is 69mm, thus we're estimating that a 66-68mm focus gear ring should fit nicely.