Metabones Speed Booster Ultra 0.71x Adapter for Leica R-Mount Lens to Micro Four Thirds-Mount Camera

Metabones Speed Booster Ultra 0.71x Adapter for Leica R-Mount Lens to Micro Four Thirds-Mount Camera

Metabones Speed Booster Ultra 0.71x Adapter for Leica R-Mount Lens to Micro Four Thirds-Mount Camera

B&H # MEBSPLRM43BM MFR # MB_SPLR-M43-BM3
Metabones Speed Booster Ultra 0.71x Adapter for Leica R-Mount Lens to Micro Four Thirds-Mount Camera

Metabones Speed Booster Ultra 0.71x Adapter for Leica R-Mount Lens to Micro Four Thirds-Mount Camera

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Product Highlights

  • Leica R Lens to Micro 4/3 Body
  • Full-Frame Lens to Micro 4/3 Camera Body
  • 0.71x Micro 4/3 Crop Factor Compensation
  • 1-Stop Increase in Lens Apertures
  • 5 Optical Elements in 4 Groups
  • Locking Mechanism to Secure Lens
  • Push-Button Lens Release
  • Brass Mounting Rings
  • Detachable Tripod Foot
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You Pay: $449.00

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Metabones MB_SPLR-M43-BM3 overview

  • 1Description

The Speed Booster Ultra 0.71x Adapter for Leica R-Mount Lens to Micro Four Thirds-Mount Camera from Metabones allows a Leica R-mount lens to be mounted onto a Micro Four Thirds-mount camera. While doing so, the adapter's optics help to maximize the connected lens's apparent angle of view while providing a 1-stop increase for the camera over the lens's aperture range.

If a lens intended for 35mm film or similarly-sized full-frame camera sensors is connected to a camera with a Micro Four Thirds-sized sensor, it would project an image larger than the Micro Four Thirds sensor was built to accept. Able to capture only the center portion of the projected image, the effective angle of view of the lens would be narrowed, creating an in-camera "crop factor." The Speed Booster Ultra 0.71x Adapter for Leica R-Mount Lens to Micro Four Thirds-Mount Camera condenses the light from a lens designed for 35mm film or "full frame" camera sensors and projects it onto a Micro Four Thirds sensor. This allows a Micro Four Thirds sensor to utilize more of the light gathered by a connected lens, which effectively reduces the crop factor while making available to the sensor an additional 1 stop of light for each of the lens's f/stop settings.

This adapter is constructed from aluminum alloy for durability while minimizing weight and its mounting rings are made with brass to further prevent wear-and-tear. Inside are five lens elements in four groups that are designed to provide optical clarity as well as color fidelity, and a detachable tripod foot is included that features 1/4"-20 threads as well as compatibility with Arca-Swiss tripod heads.

The Speed Booster Ultra 0.71x Adapter for Leica R-Mount Lens to Micro Four Thirds-Mount Camera does not support electronic communication between an attached camera and lens. To help determine the amount of light that enters a Micro Four Thirds-mount camera when using this adapter and a Contax/Yashica-mount lens, users should use the aperture ring found on the lens.

  • Allows a full-frame Leica R-mount lens to be used with a Micro Four Thirds-mount camera
  • Maximizes apparent angle of view of combined camera and lens
  • Provides a 1-stop increase for the camera over the lens's aperture range
  • Five lens elements in four groups for optical clarity as well as color fidelity
  • Detachable, Arca-Swiss compatible tripod foot with 3/8" threads
  • Aluminum alloy components for weight reduction
  • Brass mounting rings prevent wear-and-tear
  • Locking mechanism for secure attachment of lens with push-button release
In the Box
Metabones Speed Booster Ultra 0.71x Adapter for Leica R-Mount Lens to Micro Four Thirds-Mount Camera
  • Front Cap
  • Rear Cap
  • Tripod Foot Key
  • Limited 1-Year Warranty
  • Table of Contents
    • 1Description

    Metabones MB_SPLR-M43-BM3 specs

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    Camera Mount Micro Four Thirds
    Lens Mount Leica R
    Magnification 0.71x
    Optical Design 5 Elements in 4 Groups
    Physical
    Packaging Info
    Package Weight 0.75 lb
    Box Dimensions (LxWxH) 4.7 x 4.2 x 2.3"

    Metabones MB_SPLR-M43-BM3 reviews

    Speed Booster Ultra 0.71x Adapter for Leica R-Mount Lens to Micro Four Thirds-Mount Camera is rated 4.0 out of 5 by 1.
    Rated 4 out of 5 by from Stellar Optics I had used the prior version of this Speedbooster since I felt I lost some sharpness and increased flare. With older R lens this can be a problem. But this version was beautiful, held the sharpness and resisted the flare. A real improvement. I did run into one problem with it however: the threads of the tripod foot mounting hole was not properly manufactured and could not be used. I do like to use the foot for the longer heavier R lenses so I sent it back. B & H were very easy to deal with on the return. I may reorder it again down the road if I decide to stay in MFT format. It really works.
    Date published: 2016-08-24
    • y_2018, m_10, d_21, h_15
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