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M42 to EF Adapter, Manual Lens Mount Adapter for M42 42MM Screw Mount Lens Compatible with Canon EF EF-S EOS Cameras
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£21.99
£27.99
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Features
- * 【Features】 Manual adapter without electrical contacts, supports manual control, manual focus, manual exposure and focus to infinity.
- * 【Function】 Mounts M42 Screw Mount lenses to EF/EF-S Mount Cameras.
- * 【Cameras】 Compatible with Canon EOS (EF, EF-S) Mount SLR Cameras - Popular models include: 1d/1ds, Mark II, III, IV, X, C, 5D, 5D Mark II/III, 7D, 10D, 20D, 30D, 40D, 50D, 60D, 60Da Rebel xt, xti, xs, xsi, t1i, T2i, T3, T3i, T4, 300D, 350D, 400D, 450D, 500D, 550D, 1000D, etc.
- * 【Material】 All-metal design and hardened anodized aluminum construction.
- * 【Verify Your Lens and Camera Mount】You can find your lens/camera mount in the len's/ camera's original user manual. Or find your lens/camera on the manufacturers' website and under the product specifications look for “mount type”.
Unsure your lens mount ? check here
Unsure your camera mount ? check here
Video for verify your lens and camera mount check here
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FREE Shipping to United Kingdom,Ireland,India,Gibraltar,
Malta,Cyprus,South Africa,
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Accessories
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Brand Story
Why Should You Choose K&F Concept？
Professional camera accessory manufacturer.
Reliable partner in your photography life.
Premium picked up products.
Adapters are made of metal sealing ring, much tighter, with laser fonts, much durable.
Reliable partner in your photography life.
Premium picked up products.
Adapters are made of metal sealing ring, much tighter, with laser fonts, much durable.
Features:
M42 to EOS Adapter, manual adapter without autofocus/auto diaphragm/aperture control
Camera: Camera: Canon EOS (EF, EF-S) Mount SLR Cameras: 1d/1ds, Mark II, III, IV, X, C, 5D, 5D Mark II/III, 7D, 10D, 20D, 30D, 40D, 50D, 60D, 60Da Rebel xt, xti, xs, xsi, t1i, T2i, T3, T3i, T4, 300D, 350D, 400D, 450D, 500D, 550D, 1000D, etc.
Compact and high quality with metal material
Precise production to ensure the perfect fit
Allows focus infinity
Elegant clear appearance
Properly installed when you rotate about 90 degrees and hear a light "click".
Please screw the lens adapter lightly and skillfully, needn't too much force.
Camera: Camera: Canon EOS (EF, EF-S) Mount SLR Cameras: 1d/1ds, Mark II, III, IV, X, C, 5D, 5D Mark II/III, 7D, 10D, 20D, 30D, 40D, 50D, 60D, 60Da Rebel xt, xti, xs, xsi, t1i, T2i, T3, T3i, T4, 300D, 350D, 400D, 450D, 500D, 550D, 1000D, etc.
Compact and high quality with metal material
Precise production to ensure the perfect fit
Allows focus infinity
Elegant clear appearance
Properly installed when you rotate about 90 degrees and hear a light "click".
Please screw the lens adapter lightly and skillfully, needn't too much force.
Advices:
Infinity focus position:
The position of the infinity mark [∞] of the telephoto lens or super telephoto lens is shifted slightly to the positive side to enable focus adjustment even when focus shift is caused due to temperature changes. The shift range is denoted by an L-shaped line, Be sure to check the focus through the viewfinder even when you shoot at infinity.
'No Lens Attached' - Warning Message Appears:
The camera needs to be set to function without an E-Mount lens attached. You can do this by changing the following camera setting: 'Menu' -> 'Setup' -> 'Release w/o Lens' -> 'Enable' (Exact naming and location of this option may change depending on camera model). If your lens does not have a manual aperture control ring, it will stop down to its smallest f/stop by default.
Set camera "release shutter without lens" to enable when using the adapter for the first time, or the camera will fail to recognize the lens and the shutter may not be released.
The position of the infinity mark [∞] of the telephoto lens or super telephoto lens is shifted slightly to the positive side to enable focus adjustment even when focus shift is caused due to temperature changes. The shift range is denoted by an L-shaped line, Be sure to check the focus through the viewfinder even when you shoot at infinity.
'No Lens Attached' - Warning Message Appears:
The camera needs to be set to function without an E-Mount lens attached. You can do this by changing the following camera setting: 'Menu' -> 'Setup' -> 'Release w/o Lens' -> 'Enable' (Exact naming and location of this option may change depending on camera model). If your lens does not have a manual aperture control ring, it will stop down to its smallest f/stop by default.
Set camera "release shutter without lens" to enable when using the adapter for the first time, or the camera will fail to recognize the lens and the shutter may not be released.
Reviews (90)
- All Reviews
- Image
Verified Purchase
Used only a few times, but it looks great!
"I've used it too little yet, but it's a truly excellent adapter, nothing like the cheaper ones costing just a few euros. Stable, precise, and without play, it's easy to install and remove.
A truly good product, worth spending a little more for!"
A truly good product, worth spending a little more for!"
17/11/2025
Verified Purchase
Fits like a charm!
"It was a bit of a snug fit with my NIKKOR 50mm 1.4 but fortunately it has enough clearance that removing the adapter was pretty easy.
The adapter is well built and sturdy I would absolutely get more of these adapters for future NIKKOR lenses!"
The adapter is well built and sturdy I would absolutely get more of these adapters for future NIKKOR lenses!"
13/11/2025
Verified Purchase
Expensive, but it does the job, fits the EOS 500D
There were too many manufacturers to choose from, so I went for something expensive with more features ^_^
Everything is high-quality, screw it on, click it in, done. I like the M42 lenses because you can recognize them immediately,
which makes finding lenses easier, and the adapter works perfectly with my EOS 500D.
Everything is secure, everything is safe, great pictures. It takes a little getting used to because the aperture isn't set in the camera—it has to be adjusted on the lens. Otherwise, everything is as usual. Perfect for beginners.
And then you have an endless selection of nice old lenses.
High-quality adapter (you can expect that for THAT price!) - nice detail: It says M42-EF on the adapter, so you can't go wrong and don't have to search for anything. Other manufacturers should take note: write something on it explaining what it does; that would make life easier for many people..."
Everything is high-quality, screw it on, click it in, done. I like the M42 lenses because you can recognize them immediately,
which makes finding lenses easier, and the adapter works perfectly with my EOS 500D.
Everything is secure, everything is safe, great pictures. It takes a little getting used to because the aperture isn't set in the camera—it has to be adjusted on the lens. Otherwise, everything is as usual. Perfect for beginners.
And then you have an endless selection of nice old lenses.
High-quality adapter (you can expect that for THAT price!) - nice detail: It says M42-EF on the adapter, so you can't go wrong and don't have to search for anything. Other manufacturers should take note: write something on it explaining what it does; that would make life easier for many people..."
12/11/2025
Verified Purchase
Works Perfectly as Described (See photo of release button)
"I purchased this adapter to use a couple of Rokinon lenses for astrophotography on my newer Canon DSLR.
The adapter goes on without effort. Removing can be tricky but at first but removes easily once you identify the release button (see photo). Press the button and rotate clockwise to remove from the lens. There are no instructions provided which would be nice as removal is not intuitive out of the box.
The metal portion is glossy (smooth) which I appreciate. Many adapters have rough (mat) finishes that seem to be rough on the lens mounts.
I would recommend!"
The adapter goes on without effort. Removing can be tricky but at first but removes easily once you identify the release button (see photo). Press the button and rotate clockwise to remove from the lens. There are no instructions provided which would be nice as removal is not intuitive out of the box.
The metal portion is glossy (smooth) which I appreciate. Many adapters have rough (mat) finishes that seem to be rough on the lens mounts.
I would recommend!"
03/11/2025
Verified Purchase
Expensive, but serves its purpose, fits on EOS 500D
There were too many manufacturers to choose from, so I went for something expensive with more details ^_^
Everything is high quality, screw it on, click it in, done. I like the M42 lenses because you can recognize them immediately,
that makes it easier to find lenses and the adapter works perfectly with my EOS 500D.
Everything is fixed, everything is secure, great pictures. A little getting used to because the aperture is not set in the camera - that has to be adjusted on the lens. Otherwise everything is as usual. Perfect for beginners.
And then you have an infinite number of nice old lenses to choose from.
High quality adapter (you can expect that for THAT price!) - nice detail: it says M42-EF on the adapter, so you can't go wrong and don't have to search for anything, other manufacturers should take this to heart too: write something on it about what it does, that would make life easier for many people...
Everything is high quality, screw it on, click it in, done. I like the M42 lenses because you can recognize them immediately,
that makes it easier to find lenses and the adapter works perfectly with my EOS 500D.
Everything is fixed, everything is secure, great pictures. A little getting used to because the aperture is not set in the camera - that has to be adjusted on the lens. Otherwise everything is as usual. Perfect for beginners.
And then you have an infinite number of nice old lenses to choose from.
High quality adapter (you can expect that for THAT price!) - nice detail: it says M42-EF on the adapter, so you can't go wrong and don't have to search for anything, other manufacturers should take this to heart too: write something on it about what it does, that would make life easier for many people...
24/09/2025
Verified Purchase
Well made adapter ….
I recently purchased the K & F Concept M42 Mount Adapter to Canon EF Mount, and I am thoroughly impressed. The all-metal construction gives it a premium feel and durability that stands out. It feels solid and well-made, just like most of the items I’ve purchased by K & F Concept. The fit is perfect—smooth and secure, with no play or wobble when attaching lenses. It allows me to use all my vintage M42 lenses seamlessly on my Canon EF camera’s, unlocking new creative possibilities that these vintage lenses provide.
As always, Amazon delivered the item very quickly, and at a competitive price point, this adapter offers excellent value, plus it comes in its own hard case, which is a bonus. Whether you’re a hobbyist or a professional, this is a fantastic addition to your gear. Highly recommended!
As always, Amazon delivered the item very quickly, and at a competitive price point, this adapter offers excellent value, plus it comes in its own hard case, which is a bonus. Whether you’re a hobbyist or a professional, this is a fantastic addition to your gear. Highly recommended!
21/09/2025
Verified Purchase
great product
It does what it is designed to do very well.
No issues with this product, all my M42 lenses can now be used on my Canon 6D and it works great.
No issues with this product, all my M42 lenses can now be used on my Canon 6D and it works great.
16/09/2025
Great. I have an old Tamron 500mm mirror lens ...
Great.
I have an old Tamron 500mm mirror lens that I bought in 1985. I had long thought it was now useless. But no! This adapter actually works so I can use it on my Canon EOS 400D camera. I just set the mode to aperture priority and reduce the exposure by one stop and then use as before. (I set the exposure to one stop under because the lens always seemed to work at a 5.6 aperture setting instead of the 8.0 it was meant to be).
So now I have my old lens.
I have an old Tamron 500mm mirror lens that I bought in 1985. I had long thought it was now useless. But no! This adapter actually works so I can use it on my Canon EOS 400D camera. I just set the mode to aperture priority and reduce the exposure by one stop and then use as before. (I set the exposure to one stop under because the lens always seemed to work at a 5.6 aperture setting instead of the 8.0 it was meant to be).
So now I have my old lens.
03/09/2025
Sturdy adapter
Was recommended this by a photographer friend and can agree, it‘s the best adapter ! Not at all wobbley. Great way to get more use out of some of the excellent OM lenses, that can be found quite inexpensively these days, on a modern camera.
30/08/2025
Does not work on a canon 80D
So the description of the product is OK. But I had a look at the reviews and some guy said it works ok with canon 80D as well, so I bought it. It doesn‘t! Should have followed the description of the product! Incompatible with 80D. Returned! Hope it helps! Other than that, the product looks neat!
26/08/2025
FAQs
A
Don’t forget that it’s a manual lens adapter. Works with full manual lenses. If your lens has no physical aperture ring, you cannot control it from your camera
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A
No Allen wrench comes with the unit and I did not need one. Mine did not require any adjustments and fit like a glove.
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A
Hi, this adapter is for Canon EOS mount lens to Sony E NEX mount camera, we checked the sony a 7iii camera mount is E mount , this adapter can fit it , but you can reconfirme it , thanks.
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Video
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Specification
| Adapter | |
|---|---|
| camera | EOS |
| lens | M42 |
| Ring material | |
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