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This Metabones Nikon G to BMPCC Speed Booster (META-060, MB_SPNFG-BMPCC-BM1) let you use Nikon G (and F) lenses on Blackmagic Design Pocket Cinema camerabody's. The Speed Booster glass element will increase the field of view from your lens with 0.58x and increase the maximum aperture with 1 2/3 f/stop. With the aperture ring on the adaptor you are able to take over the aperture control of your Nikon G lens.

Tips: Before mounting your lens to the adaptor, please make sure that the f-stop of the aperture ring on the adaptor is turned to "7" (i.e. mounting your lens to the adaptor while only the aperture ring in the adaptor is full closed).

Nikon-G/F to Micro-4/3 mount Speed Booster^TM  adapters designed exclusively for the Blackmagic Pocket Cinema Camera (BMPCC). Note that this new 0.58x Speed Boosters will only attach to BMPCC equipped with a Micro-4/3 mount. They cannot be attached to standard Micro 4/3 cameras.

The 0.58x Speed Booster reduces the crop factor of the BMPCC from 2.88x to 1.75x, and produces the largest aperture optics currently available, with a maximum output aperture of f/0.74.  For example, a 50mm f/1.2 now becomes a 29mm f/0.74 (i.e, by using 50mm lens, the actual focal length in BMPCC is 29mm x 3.02 = 87.58mm), and the Sigma 18-35mm f/1.8 becomes the world’s fastest zoom lens at 10.5-20.3mm f/1.0 with stunningly sharp performance. (i.e, by using 18-35mm lens, the actual focal length in BMPCC is from (10.5mm x 3.02 = 31.71mm) to (20.3mm x 3.02 = 61.31mm). More detail about crop factors, please refer to the table below.

Features
• Increases field of view with 0.58x
• Increases MTF (Detail/Contrast)
• Increases maximum aperture with 1 2/3 f/stop. (with a maximum aperture of f/0.74)
• Industry's best aperture ring covers a 8-stop range markings, clearly indicating actual number of f-stops. No more guesswork! (Patent pending).
• Both camera-side and lens-side of the adapter are made of brass, precision-machined and plated with chromium.
• Satin surface finish - just like your OEM lens and camera mounts.
• Precise fit and solid connection - lens has no play, gap or wiggling when mounted on adapter and no adjustments are required to fit your lens.
• Designed to reach infinity focus while maintaining the correct registration distance required to maintain optical quality of CRC lenses or lenses with floating elements.

Specifications
• Nikon G and F lens attachment
• Blackmagic Pocket Cinema Camerabody attachment

List of incompatible lenses
Nikkor 2.1cm /f4.0
NIkkor 20 /f2.8 AI-s