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Camera Accessories
A mount adapter lets you put a lens from one system on a body from another — a Canon EF lens on an EOS R, a Nikon F lens on a Z body, or a vintage M42 or Leica M lens on almost any mirrorless camera. Browse electronic autofocus adapters, simple manual tubes and focal-reducing speed boosters, with the lens and body mounts each one joins and UK prices compared.
Not sure a lens will adapt to your body? Check the pairing, the flange distances and the adapters we list for it in the Mount Adapting tool →
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Start with the two mounts: an adapter joins one lens mount to one body mount, so the pair has to match exactly. Adapting works when the lens was designed to sit further from the sensor than your body's mount allows (a longer flange distance), which is why almost any DSLR or vintage SLR lens adapts to a mirrorless body, but mirrorless lenses cannot go onto a DSLR without optics. Next decide how much of the lens you need to keep working. Electronic adapters pass the lens's signals through, so you keep autofocus, aperture control, stabilisation and EXIF data — the maker's own adapters (Canon EF-EOS R, Nikon FTZ II, Sony LA-EA5) are the safest choice, and third-party AF adapters from Sigma, Metabones and Viltrox work well but publish compatibility lists worth checking for your exact lens. Aperture-only adapters let you set the aperture from the body but focus by hand. Manual adapters are simple machined tubes with no electronics: you focus and set the aperture on the lens, which suits vintage glass and costs far less. Finally, speed boosters (focal reducers) put glass inside the adapter to shrink a full-frame image onto a smaller APS-C or Micro Four Thirds sensor, giving a wider view and roughly a stop more light — popular for video. Helicoid adapters add a focusing ring for close-up work, and a few AF adapters motorise manual-focus Leica M lenses.
Do lens adapters affect image quality?
A plain adapter with no glass in it does not change image quality at all — it simply holds the lens at the right distance from the sensor. Quality only depends on the adapter being machined accurately, so the lens is square to the sensor and reaches infinity focus. Adapters with optics (speed boosters and expanders) add glass, so a good one costs more; cheap optical adapters can soften the corners.
Will autofocus work with an adapted lens?
Only with an electronic adapter, and how well depends on the pairing. Same-brand adapters such as the Canon EF-EOS R or Nikon FTZ II give near-native autofocus with that brand's lenses. Cross-brand AF adapters (for example Canon EF to Sony E) work with most modern lenses but tracking can be slower and some older lenses are unsupported. Manual adapters never give autofocus — you focus by hand, helped by focus peaking and magnification on the camera.
What is a speed booster?
A speed booster, or focal reducer, is an adapter with a lens element that concentrates the image from a full-frame lens onto a smaller sensor. On APS-C a 0.71× booster makes a 50mm f/1.4 behave roughly like a 35mm f/1.0 — a wider view and about one extra stop of light. It only works in one direction (larger-format lens on a smaller sensor) and suits video shooters who want full-frame depth of field from a smaller camera.