Metabones Nikon G to Canon RF-Mount Speed Booster Ultra 0.71x Adapter with Tripod Foot (Black)

Optical design: advanced 5-element/4-group optical design incorporating ultra-high index tantalum-based optical glass to achieve extraordinary optical performance with improved corner sharpness, distortion and reduced vignetting.

Like the revolutionary original Metabones Speed Booster announced in January 2013, the Speed Booster Ultra has a magnification of 0.71x, and so it effectively reduces the crop factor of mirrorless cameras with DX-sized sensors(APS-C), such as Sony E-mount and Fujifilm X-mount cameras, from 1.5x to 1.07x. However, the new Ultra design makes very effective use of exotic materials at the furthest limit of glassmaking technology, and as a result is well corrected for use with virtually all full-frame SLR lenses regardless of exit pupil distance. Thus, the Speed Booster Ultra performs extremely well with professional-grade f/2.8 zoom lenses such as the 24-70mm f/2.8 and 70-200mm f/2.8 zooms by Canon and Nikon to produce 17-50mm f/2.0 and 50-142mm f/2.0 high-speed zooms, respectively. Similarly, high-speed fixed focal length lenses such as a 50mm f/1.2 will be transformed into a 35.5mm f/0.9 lens with excellent contrast and resolution from the centre all the way to the edges of the image. (More information can be found in the press release

Key Features:

Nikon F to Canon RF-Mount Adapter

Compatible with Nikkor G and F Lenses

Supports AI and Non-AI Mounts

Clickless Aperture Ring with 8-Stop Range

5-Element/4-Group Optical Design

Ultra-High Index Tantalum Optical Glass

Increases Maximum Aperture by 1 Stop

Improves MTF Performance

Lens Becomes 0.71x Wider

Aluminium Alloy and Brass Construction

Rubber Gasket Protects Z-Mount Connection

Chromium Plated with Satin Finish

Compatible with Arca Swiss, Markins, Photo Clam

What's in the Box:

Metabones Nikon G to Canon RF-Mount Speed Booster Ultra 0.71x Adapter with Tripod Foot (Black)