Metabones NF-BMPCC4K Speed Booster XL 0.64x for Nikon F-Mount, G-Type Lens to Blackmagic Design BMPCC 4K Camera (MB_SPNFG-M43-BM5) Review

The Metabones NF-BMPCC4K Speed Booster XL is a specialized adapter that mounts Nikon F-mount lenses (including G-type) to the Blackmagic Pocket Cinema Camera 4K. Its 0.64x focal reduction widens the field of view and increases light transmission by roughly one stop, effectively countering the crop factor of the Micro Four Thirds sensor. This makes it particularly useful for shooters who want to maximize lens speed and achieve a more full-frame look on the BMPCC 4K.

At 271 dollars, it sits in the mid-tier for speed boosters and represents a practical option for filmmakers already invested in Nikon glass. Metabones adapters are known for solid optical quality and reliable electronic communication with modern lenses, though this model is designed specifically for passive Nikon F-mount lenses. It ships with a support foot to help balance heavier telephoto lenses on the camera body.