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Metabones Nikon G Lens to Blackmagic Pocket Cinema Camera Speed Booster
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- Rear Lens Cap
- Front Lens Cap
- Hex Key
- Limited 1-Year Warranty
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The Nikon G Lens to Blackmagic Pocket Cinema Camera Speed Booster from Metabones allows a Nikon G lens to be mounted to a Pocket Cinema Camera, and in doing so, increases the angle of view and the maximum aperture. The 6-element optical design within the Speed Booster incorporates ultra-high index glass to achieve ideal optical performance at the largest apertures. It increases the maximum aperture by 1 2/3 stops with a maximum aperture of f/0.74, and reduces the crop factor from 2.88x to 1.75x. The Speed Booster not only increases the field of view and lens speed, it also increases the lens' MTF, or how faithfully the lens transfers detail from the object to the camera sensor. These increases in MTF are seen in the corners as well as the center of the images. Built into the Speed Booster is a clickless aperture ring, a must-have feature for cinematographers, as well as a removable Arca-type compatible tripod mount. This Speed Booster is not compatible with the Nikkor 2.1cm f/4.0 lens, or the 20mm f/2.8 AI-S lens.
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The Metabones can have a very tight fit both against the camera and lenses, so just take an extra moment to be sure you're applying pressure in the right direction to attached & remove both the adapter and lens without damaging anything. Be sure to pickup lenses that are compatible with the manual aperture ring for maximum usability.
I was looking for a "quality" way to adapt my Nikon lenses to the Blackmagic Pocket Cinema Camera. So far, it does that well.
I did a test that was pretty unscientific to check how the focal length/and lens speed was affected by the Metabones adapter. Here's what I did... I mounted my Black magic Pocket w/Nikon 14-24mm 2.8 to a tripod - set it to 14mm with wide open aperture (2.8) and recommended iso 800 to a tripod(shutter angle 180, 29.97fps). Over the top of that, I mounted a Canon 5Dlll with a 16-35mm 2.8 set to iso 800 (shutter 30fps, video-29.97fps).
I zoomed the Canon lens to match the widest view that I was getting from the Nikon lens - the Canon zoom matched at 24mm, so it looks like the adapter (in 35mm full frame terms is changing my Nikon 16mm zoom to a 24mm at it's widest point. Next I matched the exposure I liked on the Blackmagic w/Nikon lens, which was also 800 f2.8 shutter angle 180 to the Canon set at iso 800 f2.8 shutter 1/30th - both cameras set at 29.97 fps.
My understanding is, that a shutter angle of 180 at 29.97fps amounts to a shutter speed of close to 1/60th of a second, so it appears as though I was getting about a one stop increase in performance by using the Metabones speed boost.
I hope this helps.
The quality control and support of this Metabones brand is not how I do business. I'm returning this, since Amazon Prime has excellent customer service, and will not purchase Metabones products again until they improve their Quality Control and Customer Support.
If yours works, great. The specs are awesome. But if it doesn't--good luck getting quality support.