M42 to Pentax PK K Mount Lens Adapter Ring – Copper

M42 to Pentax PK K Mount Lens Adapter Ring

Breathe new life into your vintage M42 screw-mount lenses by attaching them to your Pentax PK / K mount camera body. This precision-machined copper adapter ring lets you mount any M42 threaded lens onto compatible Pentax cameras, unlocking a world of classic optics with full manual control — including manual focus, manual exposure, and aperture priority shooting.

Key Features

• Universal M42 Compatibility: Fits all standard M42 (42mm screw thread) lenses onto Pentax PK / K mount camera bodies.
• Quality Copper Construction: Machined from quality copper for a secure, precise fit and long-lasting durability.
• Infinity Focus Support: Supports focus to infinity so you can shoot landscapes and architecture without compromise.
• Full Manual Control: Enables manual focus, manual exposure, and aperture priority for creative freedom.
• Lightweight & Compact: Weighs only approximately 28g — virtually no added bulk to your camera kit.
• Includes Disassembly Tool: Comes with a tool to assist with fitting and removal.

Specifications

• Compatibility: M42 screw-mount lenses → Pentax PK / K mount camera bodies
• Material: Copper
• Color: Silver
• Weight: Approx. 28g
• Country of Origin: Made in China

What's in the Box

• 1 × M42 to Pentax PK K Mount Adapter Ring
• 1 × Disassembly Tool

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Frequently Asked Questions

Q: Which Pentax cameras are compatible with this M42 to PK adapter ring?

A: This adapter ring is compatible with all Pentax cameras that use the PK / K bayonet mount, including Pentax K-series film cameras and digital SLRs such as the Pentax K-1, K-3, K-70, K-50, and many others. Always verify your specific camera model uses the Pentax PK / K mount before purchasing.

Q: Will this adapter support autofocus?

A: No — because M42 lenses are manual-focus optics, this adapter supports full manual control only: manual focus, manual exposure, and aperture priority. Autofocus and automatic exposure are not available when using this adapter.

Q: Can I achieve infinity focus with this M42 to Pentax PK adapter?

A: Yes. This adapter is designed to support focus to infinity, making it suitable for a wide range of photography including landscapes, portraits, and street photography with your vintage M42 lenses.

Q: Is the adapter ring durable enough for regular use?

A: Yes. The adapter is machined from quality copper, providing a sturdy, precise fit between lens and camera body. Its lightweight design (approx. 28g) ensures it adds minimal bulk while maintaining a secure connection during shooting.

Production & Packaging Notice

To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.