Metabones PL to Emount T CINE Speed Booster ULTRA 0.71x (Black Matt) (MB_SPPL-E-BT1)

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.

• Both camera-side and lens-side of the adapter are made of brass, precision-machined and plated with chromium
• Satin surface finish - just like your OEM lens and camera mounts
• Precise fit and solid connection - lens has no play, gap or wiggling when mounted on adapter and no adjustments are required to fit your lens
• Designed to reach infinity focus while maintaining the correct registration distance required to maintain optical quality of CRC lenses or lenses with floating elements
• 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
• EXIF data such as lens identification, focal length and aperture

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. All Metabones Adapters follow this tradition of uncompromising precision, robust build quality and outstanding finish.

Speed Booster ULTRA for E-Mount and X-mount cameras
Sharper corners, less distortion, reduced vignetting
New 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 and Super35 camcorder, such as Sony E-mount, Fuji X-mount cameras Sony FS7 MARKII, 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/Prime lenses regardless of exit pupil distance.

Features and benefits
Optical/Mechanical
• Design for attaching full-frame PL Prime Lens to Sony E-mount cameras/camcorders
• Increase maximum aperture by 1 stop
• Increase MTF
• Makes lens 0.71x wider
• Advanced 5-element/4-group optical design incorporating ultra-high index tantalum-based optical glass by Caldwell Photographic in the USA (patent pending)
• New positive-lock PL lens mount. (Patent pending)
• Felt material flocked inside the opening to reduce internal reflection
• Compatible with Sony FS7 Mark II camera
• The tripod foot is detachable and compatible with Arca Swiss, Markins, Photo Clam ball heads

Limitations
Optical/mechanical
• Metabones PL T CINE Speed Booster TM adapters are designed exclusively for the Zeiss CP.2 and CZ.2 lenses
• Speed Booster ULTRA is designed to cover an APS-C/Super35 image circle which is not big enough to cover a full-size 36mm x 24mm sensor. On a full frame camera body (A7 series, NEX-VG900) the camera needs to have "APS-C/Super 35mm" set to either "Auto" or "On"