Lens Adapter JYC for Nikon AF/Ai/AiS to M42 mount (SB1001)

The JYC lens adapter SB1001 allows mounting Nikon AF, Ai and AiS lenses to cameras with an M42 screw mount. This mechanical adapter provides a secure physical connection between Nikon F-mount optics and M42-bodied film or digital cameras. It does not transmit electronic signals and does not support autofocus; aperture and focus control remain manual on the lens. The adapter is designed for photographers who want to use vintage Nikon lenses or specialized optics on M42-mount cameras for creative manual shooting, macro setups or adapter-based optical experiments.

Advantages

The adapter offers a durable metal construction that maintains correct flange distance for compatibility with a wide range of Nikon F-mount lenses. Because it is purely mechanical, there is no electronic communication, which preserves the original lens behavior and makes the adapter simple, reliable and lightweight. The adapter enables full manual control of aperture and focus on connected Nikon lenses while keeping a stable and repeatable mount interface for diverse photographic setups.

Suitable for

• Photographers using vintage Nikon AF/Ai/AiS lenses on M42-mount film cameras
• Digital camera users with M42 adapters or M42-compatible bodies wanting manual Nikon glass
• Macro and optical adapter rigs that require mechanical lens coupling
• Creative manual shooting and lens-swapping experiments with legacy optics

Key specifications

• Compatibility: Nikon AF, Ai and AiS lenses to M42 screw-mount cameras
• Connection type: mechanical, no electronic contacts or autofocus
• Control: manual aperture and manual focus only
• Material: metal construction for stable mount and repeatability
• Design: maintains appropriate flange focal distance for lens compatibility

How to use

Attach the adapter to the rear of a Nikon F-mount lens by aligning the mount and rotating until it locks in place, then screw the adapter into the M42 camera body or M42 extension ring until secure. Set the lens to manual focus and, if applicable, set the aperture on the lens or use the lens stop-down mechanism. Because there is no electronic communication, set exposure and focus manually on the camera or use external metering tools. When removing, carefully unscrew the adapter from the camera first and then release it from the lens to avoid stress on the mounts.

Usage recommendations

For best results, use lenses in manual mode and verify infinity focus before critical shoots; some combinations may require minor fine-tuning or shims for precise infinity calibration. Avoid forcing connections—if mount alignment feels incorrect, check orientation marks and threads before applying more torque.