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View warranty terms and conditionsThe Metabones Nikon G to BMCC Speed Booster is a second-hand lens adapter that allows you to mount Nikon G lenses on a Blackmagic cinema camera (BMCC). In doing so, it widens the angle of view and increases the maximum aperture, which is especially useful for shooting video in low light or for achieving a more cinematic look.
This adapter has been inspected by our team and comes with the Camera Market warranty (6, 12, or 24 months) so you can buy with total confidence. Please note that the exact technical specifications (such as crop factor or aperture gain) may vary depending on the version; we recommend checking the manufacturer's datasheet for precise details.
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The Metabones Nikon G to BMCC Speed Booster is a lens adapter designed to mount Nikon G mount lenses on Blackmagic Design Cinema Camera (BMCC) 2.5K cinema cameras. Its main function is to reduce the effective focal length of the lens, increasing the angle of view and gaining approximately one stop of additional light, which is especially useful in low-light environments.
Key Features
- Adapts Nikon G lenses (without aperture ring) to the Micro 4/3 mount of the BMCC 2.5K.
- Increases the angle of view by reducing the effective focal length (reduced crop factor).
- Gains approximately 1 stop of light (f/2.8 becomes effective f/2.0).
- Robust metal construction for professional use on shoots.
- Maintains electronic aperture control of Nikon G lenses.
Ideal for
Perfect for videographers and filmmakers using the Blackmagic Cinema Camera 2.5K who want to leverage the optical quality of Nikon G lenses, improving brightness and framing in digital cinema recordings.
Condition
Second-hand product inspected by Camera Market. Includes standard 6-month warranty and 24-48h shipping from Barcelona.
What is a Speed Booster and what does it do?
A Speed Booster is an adapter that, in addition to allowing you to mount a lens on a different camera body, concentrates light to increase the effective aperture and widen the angle of view. In this case, it allows you to use Nikon G lenses on a BMCC camera, improving performance in low-light conditions.
What type of Nikon G lenses are compatible?
This adapter is designed for Nikon lenses with a G mount, which are those without a manual aperture ring. When mounted on the BMCC, you can control the aperture from the camera or via the adapter, depending on the model.
Does it affect image quality?
The Speed Booster is designed to maintain high optical quality, but the final result depends on the lens used and the camera settings. In general, it improves brightness and field of view without significantly degrading sharpness.
Does it include a warranty?
Yes, this second-hand product has been inspected by Camera Market and comes with a 6, 12, or 24-month warranty, depending on the option chosen at the time of purchase.
Full condition scale
Each unit is inspected at 28 points and graded honestly. Here's how we translate each level so you know what to expect:
Barely any signs of use. Almost flawless aesthetics and perfect operation.
Light marks from normal use. Optically clean and fully functional.
Visible signs of use (scuffs, marks, brassing). Works perfectly.
Not guaranteed for use: sold for parts or repair.
Why buy used?
Depreciation is already absorbed: the same gear for much less than new.
Many classics and discontinued gems only exist today on the used market.
28-point inspection and 6-month warranty included on every unit.
Extending the life of a camera avoids manufacturing and transporting a new one.







