The 58-77mm H&Y Swift Magnetic Bridge Ring for RevoRing 58-77mmfrom H&Y Swift Magnetic Bridge Ring for RevoRing 58-77mmis made to connect the Base Modules and Top Accessories in the Swift System. This variant is built with magnetic thread that can be placed on top of the magnetic clip-on filters to make the setup compatible with accessories like the Magnetic Matte Box, Magnetic Square Filter Holder, and Magnetic Collapsible Lens Hood.

For RevoRing 58-77mm Adapter    Tough, Lightweight Aluminum Construction    For H&Y Magnetic Clip-On Filters

• Use 67-82mm for 46-62mm, 58-77mm, or 67-82mm Magnetic Variable Adapter
• Use 67-82mm for all sizes of Swift Screw-on Magnetic Adapter for wide lenses
• The 82-95mm Magnetic Variable Adapter requires the 82-95mm Magnetic Bridge Ring
• Size sensitive for all RevoRing adapters with built-in filters (VND/CPL, CPL, and Black Mist versions)

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 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: 3. Any idea which one will fit the Sony FE 70-200 f/2.8 GM?

A: That lens has an 88mm front diameter. You would need this gear ring instead. https://bhpho.to/362UVzA

Q: 4. Does this works with the Sirui anamorphic MFT 75 mm ?

A: For the Sirui 75mm f/1.8 1.33x Anamorphic Lens (Micro Four Thirds) the Tilta Seamless Focus Gear Ring (75 to 77mm) is likely too big, since the lens has a diameter of 73 mm. I recommend using the Tilta Seamless Focus Gear Ring (72 to 74mm) instead. See: https://bit.ly/3DmqZ2n

Q: 5. What is the correct size for the focus ring of the Sony 35mm f1.4 GM lens?

A: The 75 to 77mm illustrated in your link is the correct focus ring size.

Q: 6. 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: 7. What is the correct size for: 1. Canon EF 24-70 2.8 mark 1 2. Canon EF 50 2.5 compact macro

A: Unfortunately, both lenses have not been tested by Tilta for seamless ring size. Please use the following ruler to measure your lenses to see what ring works. How to measure - https://tilta.com/support/how-can-i-measure-and-find-the-right-focus-gear-ring-for-my-lens/ Tested lens list for Canon - https://tilta.com/support/what-size-rings-are-compatible-with-canon-lenses/

Q: 8. I have a Sigma 18-50mm 2.8 lens, what would be the correct size for this lens?

A: The Tilta Seamless Focus Gear Ring (59 to 61mm) is the appropriate ring for the Sigma 18-50mm 2.8 lens.

Q: 9. Hi there. Could you please advise what the right size is for the Sony 100-400mm f4.5-5.6 is? It is not on the lens guide. The lens has a 77mm filter. Cheers.

A: With these, you have to measure the outside of the lens because they only give you the threaded diameter length; but the Sony 100-400mm f4-5.6 has around a 94mm outer diameter. You could try the 88-90mm version but I doubt it will stretch to 94mm.

Q: 10. 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).