Cokin P403 Hasselblad B70 Adaptor Ring P Series

The Cokin P403 Hasselblad B70 Adapter Ring is the mechanical connection point that brings the flexibility of the Cokin P-Series modular filter system to lenses equipped with the Hasselblad B70 bayonet mount. For Hasselblad photographers who work with graduated neutral density filters to balance exposures in landscape and architectural work, polarizers for managing reflections in water and glass, or creative color effects for film-style portrait and fine-art work, the P403 is the piece that makes those tools available without permanent lens modification. It attaches to the B70 bayonet and accepts the standard Cokin P-Series filter holder, opening up the full catalog of P-Series filters.

Constructed from black anodized aluminum, the P403 is built to withstand the handling demands of professional location work — the anodizing resists corrosion and wear while the anti-reflective surface prevents the light scatter and veiling flare that uncoated metal rings can introduce when shooting in high-contrast conditions. The machined fit holds the filter holder square and stable, which matters especially when positioning graduated filters precisely over a horizon line or architectural edge. For Hasselblad B70 users investing in a reusable filter system rather than disposable screw-in filters, the P403 is a durable, functional foundation that will outlast the filters it carries.