Product Overview:

This precision-machined M22-M42 all-metal flange adapter ring is specifically designed for creative DIY lens modification and rehousing projects. It allows you to securely convert an M22*1mm internal threaded mount to a standard M42*1mm external threaded interface, making it an ideal hardware foundation for working with M42 focus helicoids and custom optical setups.

Material & Specifications:

Material: High-grade Hardened Aluminum Alloy with a durable Matte Black Anodized finish.

Internal Thread (Lens Side): M22 * 1mm.

External Thread (Adapter Side): M42 * 1mm.

Overall Thickness: 5mm (including a 1.5mm outer flange lip, as described in the product specifications).

Flange Outer Diameter: Approximately 45mm.

Application & Compatibility:

This adapter ring is widely used in custom darkroom and cine lens modification projects. It facilitates the attachment of vintage and specialized M22 mount lenses to M42 focus helicoids for macro photography and creative setups.

Important Usage Warning (Must Read):

This product is strictly a mechanical adapter ring for lens modification purposes. It MUST be used in conjunction with a dedicated M42 focus helicoid. Direct use on a camera body without an attached optical lens element or focus helicoid will result in an inability to achieve focus or form an image. It requires a focus helicoid and a lens to function properly.

Important Precision Note (Please Read):

Please be aware that all product dimensions (thickness 5mm, flange thickness 1.5mm, outer diameter 45mm) and thread specifications are hand-measured. We kindly ask you to allow for minimal manufacturing and measurement tolerances to ensure a perfect, secure fit with your specific equipment.

Package Contents:

Includes 1x M22-M42 Flange Adapter Ring.