Metabones Leica R - E Speed Booster ULTRA 0.71x (MB_SPLR-E-BM2)

Metabones Leica R - E Speed Booster ULTRA 0.71x (MB_SPLR-E-BM2)

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

Features:
- Increase maximum aperture by 1 stop.
- Increase MTF.
- Makes lens 0.71x wider.
- Advanced 5-element/4-group optical design incorporating ultra-high index tanatalum-based
- Optical glass designed by Caldwell Photographic in the USA (patent pending).
- The tripod foot is detachable and compatible with Arca Swiss, Markins, Photo cam ball heads.

Optical and Mechanical Features
– Electronic aperture, EXIF, image stabilization, autofocus
– True electronic integration of aperture diaphragm - let camera automatically choose aperture in P or S exposure modes, or dial in yourself on the camera body in A or M modes.
– Powered by camera body. No external power source required.
– Wide open button (opposite of depth-of-field preview function) makes manual focusing easy.
– The tripod foot is detachable and compatible with Arca Swiss, Markins, Photo cam ball heads.
– High performance 32-bit processor and efficient switched-mode power supply.
– Flocking material coating inside the inner hole to reduce the internal reflection.

Uncompromising precision, robust processing and build quality and outstanding finish
Since its inception, Metabones® has been designing and manufacturing lens adapters recognized among professionals and enthusiasts as leaders in design and workmanship.

Contrary to the popular trend of other factories using an aluminum ring painted black on the camera-body-side, we instead take no short-cut but use precision-machined brass with chromium plating on both the camera-body and the lens sides of our adapters, in order to ensure smooth mounting, great appearance, and durability. The lens side of the adapter features a strong leaf-spring structure, strengthening the adapter-lens connection and ensuring tightness of the lens in order to reduce wear and prevent focus errors and optical alignment issues from appearing.

Metabones uses matte-black treatment to keep internal reflection to a minimum in order to maintain the maximum optical quality possible with the lens.

Metabones® Leica R Lens to Sony NEX Speed Booster follows this tradition of uncompromising precision, robust build quality and outstanding finish.

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, such as Sony E-mount and Fuji 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 fullframe 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 center all the way to the edges of the image.

Disclaimer:
- Metabones is NOT licensed, approved or endorsed by Sony or Leica.
- Super telephotos such as the Telyt 560/5.6 may vignette at the corners.
- The following lenses require modification in order to fit on the Speed Booster:
Super-Elmar-R 15mm, Elmarit R 28/2.8, Elmarit R 35/2.8, Summicron R 50/2