Metal M42 to Canon EOS EF Lens Adapter Ring

4.7 · 29 reviews
Original price was: $7.36.Current price is: $5.89.
Pay now, in 4 interest-free payments of $1.47, or over 3–6 months
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Metal adapter ring converts M42 mount lenses for Canon EOS EF mount DSLR and film SLR cameras.

  • Manual diaphragm control only (no ROM connection)
  • Supports use with macro rings and accessories
  • Made from aluminum alloy for durability

4739 in stock

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Estimated Delivery Time3–7 business days

Reliable manual lens conversion

This metal adapter ring allows photographers to mount M42 screw-mount lenses onto Canon EOS EF mount DSLR and film SLR cameras. Perfect for those wanting to use vintage or specialized lenses with modern bodies, it provides a solid mechanical connection without electronics.

While automatic functions like autofocus and aperture control are disabled, the manual setting ensures compatibility with various lenses showing aperture rings.

Robust aluminum alloy construction

Crafted from durable aluminum alloy, this adapter ring promises longevity and a secure fit between lens and camera body. Its black finish reduces reflections while maintaining a discreet look suitable for professional use.

Full compatibility with macro accessories

Designed to support additional accessories such as macro extension rings, this adapter enhances creative possibilities. Users can experiment with close-up photography without losing the integrity of the lens mount connection.

Key specifications

  • Material: Aluminum alloy
  • Color: Black
  • Lens mount: M42 screw mount
  • Camera mount: Canon EOS EF mount
  • Contains no optical glass
  • Manual aperture control only

What's in the box

  • 1x Metal M42 to Canon EOS EF Lens Adapter Ring
Product FAQ

Frequently asked questions

01 Which cameras are compatible with the M42 to EOS EF adapter?

This adapter fits all DSLR and film SLR cameras that accept Canon EOS EF mount lenses.

02 Does the adapter support autofocus or electronic aperture control?

No, the adapter has no ROM connection; autofocus and electronic aperture control are not supported.

03 What material is the adapter made from?

The adapter is made from durable aluminum alloy with a black finish.

04 Can I use macro rings or extension tubes with this adapter?

Yes, it is compatible with macro rings and other lens accessories.

05 Does the adapter include any optical elements?

No, this adapter contains no glass elements, preserving image quality from your lens.

06 How do I control the aperture on my M42 lens when using this adapter?

Aperture must be controlled manually on the lens itself, as automatic diaphragm control is not available.

07 Is this adapter suitable for use with any M42 mount lens?

Yes, it is designed to fit M42 mount lenses for use on Canon EOS EF mount cameras.

08 Will metering work correctly with this adapter?

Metering requires stop-down mode since the camera cannot control the lens aperture electronically.

09 What comes included with the adapter purchase?

The package includes one metal M42 to Canon EOS EF lens adapter ring.

10 Is this adapter compatible with video autofocus features?

No, video autofocus is not supported when using this manual adapter.

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SKUGA_169858

Discussion

4.7
Based on 29 reviews
Rating
P***s June 13, 2026 ★ ★ ★ ★ ★

The lens twists out of alignment; you need to place a washer under the lens to center its position.

М*** May 23, 2026 ★ ★ ★ ★ ★

The adapter is well-made, but the lens is installed on the side using a scale.

T***t May 16, 2026 ★ ★ ★ ★ ★

okay

B***l March 28, 2026 ★ ★ ★ ★ ★

Good, inexpensive product that fits like the original on a Canon 6D. I recommend it; whoever gets the adapter will soon have an M42 lens in their hands.

E***r March 10, 2026 ★ ★ ★ ★ ★

Everything is great!