This Speed Booster Ultra 0.71x Adapter from Metabones allows a Nikon F-mount lens to be mounted onto a Nikon Z-mount camera. The adapter helps maximize the apparent angle of view of the lens while providing a 1-stop increase for the camera over the lens's aperture range.

The adapter is constructed from aluminum alloy for durability while minimizing weight. The mounting rings are made with brass to further prevent wear and tear. Inside the adapter are five lens elements in four groups. For improved prevention of internal ghosting and reflections, the lens elements are constructed from high-index tantalum-based glass. A detachable tripod foot offers 1/4"-20 threads and an Arca-type dovetail.

The adapter does not support electronic communication between a lens and camera. An aperture dial is built in for aperture control of Nikon G-type lenses, which do not have an aperture ring. Nikon AI or many post-Nikon AI lenses can have their aperture settings widened or narrowed using their built-in aperture control rings if preferred.

Key Features

-Attach Nikon F-mount lenses to Nikon Z-mount cameras, such as the Nikon Z50
-Compatible with NIKKOR G and F lenses (including non-AI and AI lens mounts)
-Clickless aperture ring covers an 8-stop range marking, clearly indicating the actual number of stops
-5-element/4-group optical design incorporating ultra-high index tantalum-based optical glass
-Increases maximum aperture by 1 stop
-Increases MTF
-Makes lens 0.71x wider
-Aluminum alloy and brass construction with chromium plating
-Rubber gasket protects the Z-mount connection from dust and moisture
-Satin surface finish
-Detachable Arca-type tripod foot with a 1/4"-20 thread
Compatible Lenses

-NIKKOR F-mount (including NIKKOR G series, AF-D, AI-P, AIS, AI, and non-AI lenses)
-Unsupported Lenses
-NIKKOR DX lenses and third-party lenses designed for the APS-C format (due to the limitation of image coverage)
-NIKKOR 2.1cm f/4
-NIKKOR AI-S 20mm f/2.8
-NIKKOR E series


Adapter

Camera Mount: Nikon Z
Lens Mount: Nikon F
Nikon Lens Compatibility: G-Type Lens (Aperture Ring Lens Compatible)
Magnification: 0.71x
Optical Design: 5 Elements in 4 Groups
Packaging Info

Package Weight: 0.865 lb
Box Dimensions: 4.3 x 4.1 x 2.5"