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Metabones Nikon G to BMCC Speed Booster (Black Matt)
Increase maximum aperture by 11/3 stop, makes lens 0.64x wider
Nikon-G/F to Micro-4/3 mount Speed BoosterTM adapters designed exclusively for the Blackmagic 2.5k Cinema Camera (BMCC). Note that the new Speed Boosters will only attach to Blackmagic cameras equipped with a Micro-4/3 mount. They cannot be attached to standard Micro 4/3 cameras.
The new 0.64x Speed Booster reduces the full-frame crop factor of the BMCC from 2.39x to 1.53x, thus effectively transforming it into a Super-35 format cine camera. In addition, the speed of any attached lens is increased by 11/3stops, with a maximum output aperture of f/0.80. For example, a 50mm f/1.2 becomes a 32mm f/0.80 (i.e, by using 50mm lens, the actual focal length in BMCC is 32mm x 2.39 = 76.48mm), and Sigma’s new 18-35mm f/1.8 will become an 11.5-22.5mm f/1.1. (i.e, by using 18-35mm lens, the actual focal length in BMCC is from (11.5mm x 2.39 = 27.49mm) to (22.5mm x 2.39 = 53.78mm).
- Industry's best aperture ring covers a 8-stop range, clearly indicating actual number of f-stops.
- Compatible to both Nikkor G lens & F lens (include non-AI & AI lens mounts).
- Increase maximum aperture by 11/3 stop. (with a maximum output aperture of f/0.80)
- Increase MTF.
- Makes lens 0.64x wider.
- Click-less manual G aperture ring.
- Optics designed by Caldwell Photographic in the USA.
- The tripod foot is detachable and compatible with Arca Swiss, Markins, Photo Clam ball heads.
Incompatible lenses: Nikkor 2.1cm f4, 20/2.8 AI-S
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