Filter adapter ring for OM System PRF-ZD77 Zuiko PRO — 77 mm filter diameter

This adapter ring is designed for OM System PRF-ZD77 Zuiko PRO lenses with a 77 mm filter thread. It allows photographers to mount standard 77 mm screw-on filters — for example protective, polarising or neutral density filters — while maintaining correct optical alignment and full use of the lens barrel. The adapter preserves access to focusing and zooming mechanisms and provides a secure threaded connection between the lens and filter.

Advantages

The adapter ring offers a precise 77 mm threaded interface that matches the Zuiko PRO filter mount, ensuring consistent concentric alignment and minimal vignetting with compatible optics. Its construction is engineered for a stable screw fit that prevents accidental loosening and supports quick attachment and removal of filters in the field. The ring lets you use a wide range of 77 mm filters without modifying the lens, retaining full mechanical operation of the lens hood and controls.

Suitable for

• Landscape photography with polarising or graduated filters
• Long-exposure photography using neutral density filters
• Outdoor shooting requiring protective filters
• Photographers who switch filters frequently on OM System Zuiko PRO lenses

Key specifications

• Filter thread diameter: 77 mm
• Compatibility: OM System PRF-ZD77 Zuiko PRO lens mount
• Mount type: screw-in threaded adapter
• Material: metal construction for durable fit and alignment
• Finish: matte finish to reduce reflections

How to use

Screw the adapter ring onto the lens filter thread until it seats securely, taking care not to cross-thread. Once fitted, attach standard 77 mm screw-on filters by rotating them onto the adapter until hand-tight. To remove, unscrew the filter first and then the adapter from the lens. Check for secure seating before shooting and ensure the adapter does not block lens movements or hoods during operation.

Usage recommendations

Use the adapter with high-quality 77 mm filters to maintain image quality. Clean threads on both the lens and adapter before mounting to avoid grit that could cause wear. When using heavy or stacked filters, support the assembly to avoid strain on the lens mount and check for possible vignetting at wide angles.