The Nikon F-Mount Lens to Sony E-Mount Camera Speed Booster ULTRA from Metabones improves upon the original Metabones Speed Booster with a 5 element/4 group optical design that incorporates ultra-high refractive index tantalum-based glass for improved sharpness and reduced distortion and vignetting. The Speed Booster ULTRA allows a full frame Nikon F-Mount lens to be mounted to an APS-C format E-Mount camera and in doing so, increases the angle of view and increases the maximum aperture by approximately one f/stop. It is compatible with NIKKOR F mount and F Mount G lenses including AI and non-AI mounts.

When a lens intended for full frame sensors or 35mm film is mounted to a camera with an APS-C sized sensor, it transmits a larger area of light than the smaller sensor was built to accept and therefore the effective angle of view of the lens decreases. The Speed Booster condenses light from the lens and projects it onto the APS-C sensor allowing the sensor to utilize all of the lens' light and effectively reduces the crop factor of and APS-C E-Mount camera from 1.5x to 1.07x, producing a full-frame angle of view with an APS-C sensor. A corresponding increase in the maximum aperture of one f/stop makes the lens more effective in low-light situations and able to create a shallow depth of field. 

Metabones Speed Boosters are quality made using precision-machined brass with chromium plating on both the camera body and the lens side of the booster in order to ensure smooth mounting, quality aesthetic, and durability. This adapter has a detachable tripod foot that is compatible with Arca Swiss, Markins, and Photo Clam ball heads.

Although the lens will fit physically, automatic diaphragm (AE metering), or other auto functions are not retained using this speed booster. A built-in clickless aperture control ring enables manual control of aperture from the speed booster. This 8-stop ring with clearly marked 1/2-stop markings is shipped as clickless. These speed boosters are only fully compatible with mirrorless cameras housing APS-C or smaller image sensors. They will physically fit the Sony full frame mirrorless cameras, but the camera must be set in Crop Mode to fully support the speed booster's functions.

Open Box Products Have a Limited 1-Year Manufacturer Warranty    Nikon F-Mount Lens to Sony E-Mount Body    Ultra-High Index Tantalum-Based Glass    Increases Maximum Aperture by 1 f/Stop    Increases Angle of View by 0.71x    Built-In Long-Throw Clickless Aperture    Compatible with Nikon G Lenses    Infinity Focus Adjustment    Detachable Tripod Foot    Black Matte Interior; Black Exterior

Allows a full frame Nikon F-Mount lens to be mounted to an E-mount APS-C format camera and in doing so, increases the angle of view and increases the maximum aperture by one f/stop.

The Speed Booster ULTRA design incorporates ultra-high index tantalum-based optical glass for enhanced optical performance with improved corner sharpness and reduced distortion and vignetting. This glass technology and optical design perform extremely well with professional-grade f/2.8 zoom lenses and high-speed fixed focal length lenses such as a 50mm f/1.2 which will perform as a 35.5mm f/0.9 lens with high contrast and resolution from the center to the edges of the image.

Precise fit and solid connection - lens has no play, gap or wiggling when mounted on speed booster and no adjustments are required to fit your lens. Both the camera-side and the lens-side of the speed booster are made of brass which is precision-machined and chrome-plated.

The Speed Booster uses matte-black treatment to keep internal reflection to a minimum in order to maintain the maximum optical quality possible with the lens. The exterior features a black satin surface finish.

A built-in clickless aperture control ring enables manual control of aperture from the speed booster. This 8-stop ring with clearly marked 1/2-stop markings is shipped as clickless.

The speed booster is compatible with NIKKOR F mount and F Mount G lenses including AI and non-AI mounts.

Designed to reach infinity focus while maintaining the correct registration distance required to maintain optical quality of CRC lenses or lenses with floating elements.

The speed booster features a detachable tripod foot which is compatible with Arca Swiss, Markins, Photo Clam ball heads.

Although the lens will fit physically, automatic diaphragm (AE metering), or other auto functions are not retained using this speed booster.

Related Questions and Answers

Q: 1. Will this adapter communicate iris information to the camera? Specifically zeiss planar zf lenses and sony fs5 camera.

A: No auto functions are not retained using this speed booster.

Q: 2. Will this work on the Sony fx9 full frame without vignetting?

A: The adapter is designed to take full frame down to APS-C size, so you will have vignetting.

Q: 3. Is this the Metabones adapter that would work w/ the Sony a7R II? I have older Nikon SF lenses. Thx!

A: No, that adapter is for Sony APS-C, E mount cameras. The Sony a7r II is full frame.And it is best that you come into chat or call us to discuss this further.

Q: 4. will this booster work with the Sony A6500?

A: Works a treat, no issues, manual focus only, but that's easily fixed by using peak focusing on Sony. Worked well on the followingNikon 105mm f/2.5, Nikon AF-S DX Nikkor 35mm f1.8G

Q: 5. I have a Sony a6300, will this work with my full frame Nikon lenses including tamron 70-200 2.8 and tamron 15-35 2.8 which are both Nikon f mount as well ?

A: yes as long as you have a nikon F mount lens

Q: 6. hey, i got the new sony FS5, and i got nikon F-mount/fx format lenses , dose any body know how this product works with the 2?

A: This adapter will allow you to use Nikon F mount lenses on a Sony FS5, yes.

Q: 7. Can this adapter be use with Sony a7r ii Full-frame with Sigma 500mm Nikon F mount?

A: No, the Metabones Nikon F-Mount Lens to Sony E-Mount Camera Speed Booster ULTRA, is an adapter for using E mount lenses on "cropped sensor" camera bodies like the Sony "NEX", or the Alpha A5000, and A6000 series cameras.

Q: 8. Can anyone confirm that this adapter works properly (and especially that it will allow me to obtain infinity focus on a Sony FS5) with zf.2 mount Zeiss Milvus 25, 35 f1.4, Milvus 50mm f2 Makroplanar and zf.2 (non-Milvus) 135 f2 APO? Thanks

A: While no one has reported using the outstanding Milvus line of lenses with this adapter and that camcorder, we see no reason it should not work as intended.

Q: 9. Investigating whether this would work with Sony FS5 II and Nikon 500mm f/4 lens or perhaps Nikon 200-400mm f/4. Would I be able to control aperture? Not worried about AF.

A: The Metabones Nikon F-Mount Lens to Sony E-Mount Camera Speed Booster ULTRA will mount onto the Nikon 500mm f/4, or the 200-400mm f/4, but one would not be able to receive electronic control of the lens aperture or auto focus when one is connected to the Sony FS5 II.

Q: 10. Will the speed booster metabones adapter turn on the aps-c mode on my sony a7s ii if i got to use it with the canon full frame lens? Or it will never get the aps-c mode activated on the sony a7s ii?

A: This was mostly answered above. The Speedbooster is designed for using fullframe lenses on APS-C or S35 cameras. It should work with the A7SII with the camera set in APS-C mode. It will not activate the APS-C mode as that has to be done manually.