The Speed Booster XL 0.64x utilizes an advanced optical design with six elements for exceptional performance, featuring an incredible aperture of f/0.80 – a new record for the Micro Four Thirds format. The new Speed Booster XL 0.64x reduces the full-frame crop factor of the Panasonic GH4 from 2.0x to 1.28x, effectively transforming the camera into the APS-H format. When the GH4 is used in Cinema 4K video mode, the full-frame crop factor decreases from 2.34x to 1.50x, effectively converting the GH4 into a Super 35 format 4K film camera. Additionally, the light intensity of each lens is increased by 11/3 stops, with a maximum output light intensity of f/0.80 when using an f/1.2 lens. For example, a 50 mm f/1.2 lens becomes a 32 mm f/0.80, the highest light intensity available for the Micro Four Thirds full frame.
Bayonet lens mount | Canon EF |
Camera bayonet | Micro Four Thirds |
Item number | 5628215 |
Manufacturer | Metabones |
Category | Lens adapters |
Manufacturer no. | MB_SPEF-m43-BT3 |
Release date | 6.10.2015 |
Colour | Black, Silver |
Exact colour description | Black, Silver |
Bayonet lens mount | Canon EF |
Camera bayonet | Micro Four Thirds |
Adapter Functions | Autofocus supported |
Compatible brand | Canon |
Compatible model | Canon EF |
CO₂-Emission | |
Climate contribution |
Scope of delivery | Speed Booster XL |
Length | 11 cm |
Width | 10.50 cm |
Height | 5.50 cm |
Weight | 314 g |
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