Adapter for Cokin 62mm filter system, Massa SB617

The Massa SB617 adapter for the Cokin 62mm filter system provides a mechanical interface to mount Cokin-style square or rectangular filter holders on lenses with a 62 mm filter thread. It converts a lens' 62 mm thread to the Cokin holder fitting, enabling the use of graduated filters, neutral density filters and creative filter types. The adapter is intended for photographers who need to use the Cokin filter ecosystem with lenses that have a 62 mm front thread, expanding possibilities for landscape, architecture and controlled-light photography.

Advantages

This adapter offers a reliable mechanical connection between a 62 mm lens thread and a Cokin filter holder, maintaining alignment and secure fit while allowing quick attachment and removal of the holder. The design keeps the optical axis clear and provides compatibility with a wide range of Cokin-style square and rectangular filter holders. Its compact form minimises vignetting on many lenses and permits use of graduated or solid filters without additional step-up rings when the lens thread matches.

Suitable for

• Landscape photography with graduated neutral density filters
• Architectural photography requiring precise horizon control
• Studio or product photography where creative square/rectangular filters are needed
• Photographers who own lenses with a 62 mm filter thread and use Cokin systems

Key specifications

• Mount type: converts 62 mm screw thread to Cokin-style holder interface
• Compatibility: fits lenses with 62 mm front filter thread and Cokin filter holders
• Material: durable mechanical construction suitable for field use
• Form factor: low-profile design to minimise vignetting on wide-angle lenses
• Intended filter shapes: supports square and rectangular Cokin-format filters

How to use

Unscrew any existing filter from the lens front and screw the adapter onto the 62 mm filter thread until it is firmly seated. Slide the Cokin-style filter holder onto the adapter interface until it locks or aligns as intended by the holder design. Insert the selected square or rectangular filter into the holder and position it as required. To remove, reverse the steps: slide out the filter, detach the holder, and unscrew the adapter if no longer needed.

Usage recommendations

For best results, check for vignetting by making test exposures at the widest aperture and focal length; remove or use a thinner filter holder if edge darkening appears. When using heavy holders or multiple stacked filters, support the lens to reduce strain on the adapter thread. Keep mating surfaces clean and free of grit to ensure a secure fit and to avoid cross-threading.