Good product, arrived quickly and without problems, highly recommended.
M42 to RF Lens Mount Adapter for EOSR Full Frame Cameras
$6.64
Pay now, in 4 interest-free payments of $1.66, or over 3–6 months
4 interest-free payments of $1.66
Modify your M42 mount large format or enlarging lenses to fit EOSR RF full frame cameras with this finely crafted aluminium adapter.
- Smooth installation and removal
- No auto-focus or diaphragm operation
2 in stock
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Estimated Delivery Time3–7 business days
Adapt M42 lenses to EOSR RF cameras
This lens mount adapter allows you to modify and mount M42 large format or enlarging lenses onto EOSR RF full frame cameras. Designed specifically for lenses with focusing tubes, it enables the use of legacy optics on modern digital camera bodies.
Although the adapter fits physically, automatic functions such as auto-focus and automatic diaphragm control do not operate. It is ideal for manual focusing and creative imaging with vintage lenses.
Premium aluminium construction
Crafted from durable aluminium and finished in sleek black, this adapter offers a fine tactile experience. Its smooth finish ensures easy installation and removal while maintaining camera and lens integrity.
- High-quality aluminium material
- Smooth lens attach and detach
- Black anodized finish for durability
Usage and limitations
This adapter is intended to modify lenses for use on EOSR RF mount cameras. It does not support infinite focus adjustment directly and disables electronic lens functions. Users should expect manual control over aperture and focus.
Ideal for photographers who prefer manual lenses or want to explore large format or enlarging lenses in digital photography.
- No autofocus or automatic diaphragm
- Focus manually with lens focusing tube
- Check fit and focus range compatibility
Key specifications
- Material: Aluminium
- Color: Black
- Compatibility: M42 mount lenses to EOSR RF mount cameras
- Package contents: 1 x Lens Adapter
What's in the box
- 1x M42 to EOSR RF lens mount adapter
Product FAQ
Frequently asked questions
01 What cameras is this adapter compatible with?
This adapter is designed for EOSR RF mount full frame cameras.
02 Can I use M42 lenses with this adapter?
Yes, it modifies M42 mount large format or enlarging lenses to fit EOSR RF mount.
03 Will auto-focus work with this adapter?
No, auto-focus and automatic diaphragm functions will not operate with this adapter.
04 What material is the adapter made from?
The adapter is made of aluminium with a black finish.
05 Is infinite focus possible using this adapter?
No, infinite focus is not possible directly with this adapter when used with modified lenses.
06 Does the adapter allow smooth lens installation and removal?
Yes, it is finely finished for smooth installation, removal, and operation.
07 What comes in the package?
The package includes one M42 to RF lens mount adapter.
08 Does this adapter modify lenses with focusing tubes?
Yes, it is suitable for M42 mount lenses with focusing tubes.
09 Are there any size or measurement considerations?
Manual measurement may have a 1-2 cm variance, so please consider this before ordering.
10 Does the adapter affect image quality?
The adapter physically allows mounting but does not affect image quality; however, some lens functions are disabled.
Discussion
4.2
Based on 5 reviews
Item works great, i was able to use a m42 helicoid with a m42 lens, for macro work. great price and quality. thanks
Did not work with my eos r8 + helios 44-2 lens.
The adapter is well made. It mounts snugly on an eos r. the m42 thread is clean and smooth.
If this adapter is used to mount a m42 lens directly to a canon rf mount (eos r) camera the focus with the lens at infinity will be beyond infinity - the lens is too close to the sensor. Depending on how close focusing the m42 lens is; infinity focus may still be possible (unlikely) but close focusing will be severely limited.
The flange focal distance for the rf mount is 20mm while for m42 it is 45.46 mm. So a 25.46mm long extension tube will be needed to achieve the original focusing range of a m42 lens. I used a combination of two m42 extension tubes with a total length of 20mm and this gave me a reasonable focusing range - even though the close focusing was a bit limited.
The real advantage of having such an adapter is that an eos r camera can be connected to a bunch of existing m42 accessories - macro bellows, telescope and microscope adapters, etc.
It arrived well packaged, everything fine without any issues.
