ZWO EOS Adapter for EFW – Canon EOS to ZWO Filter Wheel Connection

The ZWO EOS Adapter for EFW is designed to correctly and precisely connect Canon EOS (EF / EF-S) cameras to ZWO EFW motorized filter wheels. It allows for the use of astronomical filtering systems while maintaining the correct Canon flange focal distance (44 mm), ensuring mechanical rigidity, coaxiality, and reliability in the optical train.

Key features

• Compatible with Canon EOS EF / EF-S cameras.
• Designed for ZWO EFW filter wheels.
• Enables automated filter switching with Canon DSLRs.
• Maintains correct Canon flange focal distance (44 mm).
• High-precision CNC aluminum construction.
• Rigid, zero-play coupling.
• Reduces tilt and flexure in the optical train.

Canon EOS and astronomical filters without compromise

This adapter is the correct solution for:

• Deep-sky astrophotography with Canon DSLRs
• Multi-night sessions with automatic filter switching
• Use of LRGB and narrowband filters
• Modular and future-proof setups

It is the ideal accessory for those using Canon EOS cameras who want a workflow closer to that of dedicated astronomy cameras.

Main technical specifications

Ideal for

• 📷 Canon EOS cameras
• 🌌 Deep-sky astrophotography
• ⚙️ ZWO EFW filter wheels
• 🎨 LRGB and narrowband workflows
• 📏 Correct backfocus maintenance

Package contents

• ZWO EOS Adapter for EFW