Lens Mount Adapter Pixco NIKON (Ai/AiS/AF) to PENTACON SIX — SB1906

The Pixco SB1906 lens mount adapter enables the use of Nikon F-mount lenses (Ai, AiS and AF versions) on PENTACON SIX medium-format camera bodies. This passive mechanical adapter provides a secure physical interface between Nikon optics and the Pentacon Six mount, preserving manual focus control and direct aperture adjustment on the lens. It is designed for photographers who want to combine Nikon glass with the distinctive rendering and larger format of the Pentacon Six system.

Advantages

The adapter offers a durable metal construction that ensures stable lens alignment and repeatable mounting. It is fully passive, requiring no electronic connections, which keeps operation straightforward and compatible with mechanical aperture rings and manual focus lenses. The precise fit minimizes play between lens and camera, supporting reliable framing and consistent image quality when using vintage or modern Nikon lenses on medium-format bodies.

Suitable for

• Portrait photography using Nikon lenses on Pentacon Six cameras
• Landscape and architectural work benefiting from medium-format capture
• Studio setups where manual control of focus and aperture is preferred
• Film and digital Pentacon Six systems adapted for Nikon optics

Key specifications

• Mount compatibility: Nikon F (Ai, AiS, AF) to PENTACON SIX
• Adapter type: passive mechanical (no electronic communication)
• Material: metal construction for durability and alignment
• Functionality: retains manual focus and mechanical aperture control
• Use: supports both vintage and modern Nikon lenses

How to use

Attach the adapter to the lens by aligning the mount marks and turning until it locks in place, then mount the combined lens+adapter assembly onto the Pentacon Six camera body following the camera’s bayonet procedure. Set the lens to manual focus and use the lens aperture ring to select the desired iris; depth-of-field preview and metering behavior will depend on the camera body. Check for secure coupling before shooting and confirm infinity focus by testing at a distant subject.

Usage recommendations

For best results, use lenses known to have accurate element spacing and to cover medium-format image circles sufficiently; wide-angle Nikon F lenses may exhibit vignetting on some Pentacon Six backs. When adapting AF lenses, plan on manual focusing only. Regularly inspect and clean contact surfaces to maintain a tight fit and avoid dust entering the camera during mount changes.