Metabones SPEF-E-BT4 – Canon EF to Sony E Speed Booster ULTRA 0.71x II
GTIN: 4897050182222
Speed Booster ULTRA 0.71x II with autofocus for full-frame Canon EF lenses on Sony E cameras: one stop more light and a wider field of view.
Metabones SPEF-E-BT4 – Canon EF to Sony E Speed Booster ULTRA 0.71x II
The 0.71x focal reducer makes the lens wider, increases maximum aperture by 1 stop and improves MTF. The electronics pass autofocus, aperture, stabilization and EXIF data between the Canon EF lens and the Sony E camera, powered by the camera.
Features
- Patented 5-element/4-group optical design with ultra-high index tantalum glass by Caldwell Photographic (USA)
- Contrast-detection AF on all E-mount cameras and phase-detection AF on supported A9, A7 II/III and A6x00 models; AF-C up to 10 fps on A9, A7III and A7RIV
- Supports lens optical stabilization and 5-axis in-body stabilization, with a dedicated switch
- Smooth iris with recent Canon (2009+), Tamron SP (2013+) and Sigma (2016+) lenses; Cinema EOS lens support (servo zoom, AF, auto iris)
- Custom button assignable to more than 50 functions on A9, A7 series and A6500/A6300
- EXIF data, distance and zoom display; status LED
- Rubber gasket on the E-mount, felt-flocked interior, detachable Arca Swiss tripod foot
Note: Full-frame lenses required: EF-S, DX, DC and Di II lenses are not supported. On full-frame bodies APS-C/Super 35mm mode must be enabled. No in-camera lens corrections (shading, CA, distortion).
Specifications
| Lens mount | Canon EF (full frame) |
|---|---|
| Camera mount | Sony E |
| Magnification | 0.71x |
| Aperture gain | +1 stop |
| Electronics | electronic contacts, autofocus, camera-controlled aperture, powered by camera |
| Metabones code | MB_SPEF-E-BT4 |
| Product Condition | New |
|---|---|
| Manufacturer | Metabones |
| manufacturer code | SPEF-E-BT4 |
| Ean | 4897050182222 |
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