This 5515.48 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. Hi! Which one for the: Sirui 50mm f/1.8 Anamorphic?

A: The proper ring for this: https://bhpho.to/3e64SPM

Q: 2. 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: 3. 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: 4. Will this fit the Lumix Leica 10-25mm F/1.7 MFT and 25-50mm MFT lenses?

A: The Tilta Seamless Focus Gear Ring (88 to 90mm) would be right on the borderline, as both those lenses have a diameter of 87.6mm. I think you may be better off trying the next size down (85 - 87mm) instead, which would be a bit tighter but should provide slightly better performance.

Q: 5. 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.

Q: 6. 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: 7. 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: 8. Would this work for Canon RF 24-70mm lenses made for Canon mirrorless cameras?

A: You're better off with the 88mm to 90mm ring if you're using the Canon RF 24-70mm f2.8 lens.

Q: 9. 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: 10. I am looking to get these for old Nikon Ai-s photo lenses and a few voigtlander lenses. Is the diameter the same as the filter diameter or do I need to measure around the focus ring somehow?

A: Please use this ruler to measure your lenses for the correct size seamless Tilta ring. Ruler - https://bit.ly/3TlOugU