Mount adapter Pixco CANON EOS M (EF-M) to M42 lens mount

The Pixco mount adapter for Canon EOS M (EF‑M) to M42 lens mount enables photographers to attach M42 screw‑mount lenses to Canon EOS M mirrorless cameras. This mechanical adapter preserves the correct flange focal distance so that manual M42 lenses can achieve focus to infinity on EF‑M mount bodies. The adapter does not add electronics or optical elements; it provides a rigid mechanical interface between the camera and legacy or manual lenses for creative, manual‑focus photography.

Advantages

The adapter offers a compact, lightweight metal construction that aligns M42 lenses precisely with the Canon EOS M sensor plane. It maintains the original optical characteristics of the attached lens by avoiding additional glass elements and ensures infinity focus through accurate flange spacing. Installation and removal are straightforward, allowing quick interchange between native and adapted lenses without modifying either the camera or the lens.

Suitable for

• Photographers using vintage M42 screw‑mount lenses on Canon EOS M series bodies
• Manual‑focus portrait and street photography where lens character is important
• Experimental and creative projects requiring adapted manual optics
• Budget setups to expand lens options without buying new EF‑M lenses

Key specifications

• Mount type: M42 screw mount (lens side) to Canon EF‑M (camera side)
• Construction: mechanical adapter without electronic contacts or optical elements
• Material: metal alloy for durable bayonet and screw interface
• Compatibility: designed for mirrorless Canon EOS M cameras with EF‑M mount and M42 screw‑mount lenses
• Focus: manual focus only; preserves ability to reach infinity focus when mounted correctly
• Weight and dimensions: compact and lightweight profile for minimal added bulk

How to use

Align the M42 lens threads with the adapter and screw the lens onto the adapter securely by hand until it is seated. Then align the adapter’s EF‑M bayonet with the camera’s mount, insert and rotate until it clicks into place. Operate focus and aperture settings directly from the lens; the camera will not communicate electronically with the adapted lens. Use camera focus aids such as focus peaking or magnified live view to assist manual focusing and confirm infinity focus if required.

Usage recommendations

For reliable results, ensure the lens and adapter threads are clean and free of debris before mounting. When using manual M42 lenses, enable in‑camera focus assist functions and shoot in RAW if you plan to correct exposure or color in post‑processing. Store the adapter in a protective case when not in use to prevent wear on the bayonet and screw threads.