The Swift System by STC × H&Y (HKG) is the second generation of the RevoRing system, designed to meet the needs of both videographers and photographers. Unlike the original RevoRing, which served as a step-up ring alternative, Swift allows for quick mode changes, ensuring you don't miss any shot or waste time in the field. This versatile system supports magnetic square filters with a magnetic matte box or hood for videographers and offers an easy drop-in filter solution for photographers. For detailed size guidance and specific product descriptions, please refer to the purchase guideline.

To use the full Swift System:

Screw lens adapter ring (A) onto your lens
Attach magnetic bridge ring (B) to the adapter ring
Attach magnetic filter holder (C)
Begin using functional filters with magnetic frames

You can purchase different adapter rings for each lens, but quickly swap the bridge ring, filter holder, and filters—that's why the Swift System is the best choice.

For now we have the Star Mist 1 (2/3) special-made filter, capable of capturing the night sky with dazzling star halos while keeping landscapes crisp and clear. More filters designed for professional landscape photographers are coming soon.

What is the STC Star Mist Filter?

Unlike traditional etched soft focus filters (also called Star Soft filters), the STC Star Mist filter uses advanced optical technology by embedding submicron-sized transparent microcrystals directly into the glass matrix. These precisely controlled microcrystals selectively interact with direct incident light, creating:

Highlight enhancement and controlled diffusion around bright light sources
Enlarged star points in night sky photography
Preserved image resolution across the entire frame
A completely different effect from surface-etched soft filters

This innovative approach delivers the magical glow around stars and bright lights while maintaining the crisp detail that defines professional landscape photography.
Discover more about STC Star Mist filters and see stunning examples

Swift Magnetic Lens Adapter Ring 62–95mm

The Swift Magnetic Lens Adapter Ring by STC × H&Y (HKG) is a high-precision adapter ring designed for seamless integration with the entire Swift system. This fixed-size adapter ring ensures a perfect fit for each lens diameter, providing a secure and reliable attachment. Crafted for both photographers and videographers, it allows quick and easy accessory changes, enhancing workflow efficiency.

Why Choose STC × H&Y (HKG) Swift System?

Its magnetic attachment system allows for fast and secure accessory changes, streamlining your workflow. Constructed from high-quality materials, it guarantees durability and reliability.

H&Y (HKG) has developed a set of products around the Swift system, including the Drop-In Filter System, K-Series Magnetic Square Filter System, Swift Magnetic Matte Box, and Swift Magnetic Hood. This comprehensive system allows photographers and videographers to swap between setups with ease, enhancing creative control and efficiency.

This collaboration brings seamless convenience to users across compatible systems. STC, Taiwan's premier optical filter brand, and H&Y (HKG), our trusted partner at international exhibitions for years, are joining forces in 2026 to deliver superior external filter solutions with enhanced accessibility. Together, we're committed to serving the global photography community with innovation and excellence.

Compatibility Guide for Non-Magnetic Square Filter Systems

Before purchasing, verify your system meets these specifications:

1. Clip-On Filter Holders

Specification	Requirement
Filter width (with magnetic frame)	109mm
Minimum clip range required	108mm

2. Drop-In / Slot Filter Holders

Standard Filter Size: 100×150mm (universal compatibility)

Version	Glass Thickness	Total Thickness (with frame)	Slot Space Required
Glass-only	2.0mm	2.0mm	2mm–3.2mm
With magnetic frame	2.0mm	3.3mm	3.3mm or greater

Purchase Decision:

Slot space < 2mm → ❌ Do NOT purchase glass-only version
Slot space 2mm–3.2mm → ✓ Purchase glass-only version
Slot space ≥ 3.3mm → ✓ Either version compatible

Circular Polarizing (CPL) Filters

Price

Collections

Cine Mist VND and CPL Filters

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STC × H&Y Magnetic Swift System for square filters