Base Plates & Systems

PolarPro Helix MagLock magnetic filters, step-up rings and base plate accessories for quick filter swaps.

Build your magnetic filter system with PolarPro's Helix MagLock filters and accessories. Attach a base plate to your lens once, then swap between CPL, VND and mist filters in seconds, with no more fiddly threading. We also stock step-up rings to fit larger filters to smaller lens threads. Free UK delivery and expert advice from the CEN team.

Helix filters and accessories

Helix Base Plate Defender Cap: lens protection for Helix MagLock filters.
Helix VND: Peter McKinnon Series 2-5 stop and 6-9 stop variable NDs.
Helix polarisers: Arctic CP Benjamin Hardman Series and Chris Burkard CP.
Helix mist filters: CineGold, CineBlack, Portra, Peter McKinnon 1/4 Black Mist, and Shortstache and Goldstache polariser mists.
Quartzline step-up ring: 49mm to 67mm, CNC-machined.

Base Plates & Systems FAQs

Q: How does Helix MagLock work?

A: A threaded base plate stays on your lens. Helix filters attach magnetically and lock in place, so they stay secure while you film and come off in seconds.

Q: What size base plate do I need?

A: Choose the base plate that matches your lens filter thread, or use a step-up ring to fit one size of plate across several lenses.

Q: Do I need Helix filters for a Helix base plate?

A: Yes. The magnetic system works with Helix filters, which are marked Helix or MagLock in the product title.