Used Metabones Speed Booster Ultra 0.71x Adapter for Canon EF Lens to Sony E Mount T Speed Booster

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 tanatalum-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, 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. (More information can be found in the press release here)

• 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 by Caldwell Photographic in the USA (patent pending)
• Electronic integration of aperture diaphragm, controlled by or from the camera body
• Partial autofocus support for late-model (post-2006) Canon-brand lenses
• Powered by camera body. No external power source required
• High performance 32-bit processor and efficient switched-mode power supply
• The tripod foot is detachable and compatible with Arca Swiss, Markins, Photo Clam ball heads
• Flocking material coating inside the inner hole to reduce the internal reflection

Compatibility
Supported
• EF lenses
• Image stabilization (IS) lenses
• Electronic manual focusing (e.g. EF 85/1.2L II and discontinued EF 50/1.0L)
• EXIF (focal length, aperture, zoom range)
• P, A, S, M exposure modes
• Autofocus (see autofocus support section below)
• Distance and zoom display on VG and FS series camcorders
• Auto magnify
• Contax N mount lenses modified to Canon EF by Conurus
• Contax 645 NAM-1 adapter modified to Canon EF by Conurus
• Sigma, Tamron and Tokina lenses in Canon EF mount

Not supported
EF-S lenses
• DX lenses
• NEX-VG900
• Lens correction such as peripheral shading, CA and distortion
• Focus confirmation "chip" (e.g. Dandelion)
• M42 screw mount adapters
• Stacking non-Metabones/non-Conurus mount adapters on top
• Certain telephoto lenses
• Lens: Tamron SP 17-50mm F/2.8 XR Di II VC

Autofocus
Autofocus is supported, with the following known limitations.

• Autofocus speed is very slow and inadequate for most moving subjects. The autofocus speed is unfit for professional use for sure and it would disappoint most enthusiasts
• Only Canon-branded lenses introduced in or after 2006 are officially supported. Autofocus is disabled for older Canon lenses and most third-party lenses, including most Sigma, Tamron and Tokina lenses and all Contax N lenses modified by Conurus.
• On FS series (e.g. FS7, FS700, FS100), autofocus may be available only in photo mode but not in movie capture mode.
• Continuous AF is not supported.
• DMF mode (direct manual focus) is not supported.
• For non-camcorder camera bodies (e.g. NEX-7), during movie capture, if the subject moves to a different distance, half-press the shutter release button to re-activate autofocus and lock onto the subject again. Since autofocus speed is slow, there may be visible disruption in the resulting footage.
• The first two autofocus attempts are used to calibrate the lens and as a result may not lock successfully on the target. Half-press the shutter release button again and autofocus will lock successfully.
• Autofocus may have difficultly locking onto subjects which are very close to the nearest focusing distance of the lens.
• Autofocus accuracy depends heavily on the working condition of the lens. Lenses with hidden problems which may not be apparent on Canon DSLRs will lead to inaccurate and unreliable autofocus on Sony NEX. Typical problems of this kind that they have seen include an unsmooth/erratic autofocus mechanism (e.g. getting stuck intermittently at a certain focusing distance), a worn-out gear train with out-of-spec backlash, a faulty/worn-out distance encoder or other faulty/worn-out internal sensors.

List of lenses with autofocus support on Speed Booster ULTRA
Canon EF primes (Autofocus)
• EF 14/2.8L II USM
• EF 24/1.4L II USM
• EF 24/2.8 IS USM
• EF 35/1.4L USM (Ver.19)
• EF 50/1.2L USM
• EF 85/1.2L II USM
• EF 85/1.8 USM (Ver.18)
• EF 100/2.8 USM macro (Ver.17)
• EF 135/2L USM (Ver.17)
• EF 200/2.8L II USM (Ver.17)
• EF 300/2.8L IS USM
• Extender EF 1.4x III
• Extender EF 2x (mark I)

Canon EF zooms (Autofocus)
• EF 8-15/4L USM fisheye
• EF 17-40/4L USM
• EF 20-35/2.8L (Ver.18)
• EF 22-55/4-5.6 USM
• EF 24-70/2.8L USM II
• EF 28-80/3.5-5.6 II (Ver.18)
• EF 28-90/4-5.6 III
• EF 35-350/3.5-5.6L (Ver.18)
• EF 70-200/2.8L IS USM II
• EF 70-200/4L USM
• EF 70-200/4L IS USM
• EF 70-300/4-5.6L IS USM
• EF 70-300/4-5.6 IS USM
• EF 100-300/5.6 (non-L, not USM, push-pull zoom) (Ver.18)
• EF 100-400/4.5-5.6L IS USM

Tamron
• SP 24-70/2.8 Di VC USD A007 (Ver.15)
• SP 70-200/2.8 Di VC USD A009 (Ver.31)

Tokina (full frame)
• 28-80/3.5-5.6 (Ver.18)

Autofocus is DISABLED for the following lenses
Image stabilization (if supported by lens), auto aperture and EXIF work.

Canon EF primes
• EF 14/2.8L (mark I)
• EF 20/2.8 USM
• EF 24/1.4L USM (mark I)
• EF 24/2.8 (old version, non-IS)
• TS-E 24/3.5L
• TS-E 45/2.8
• EF 50/1.4 USM
• EF 50/1.8 II
• MP-E 65/2.8 macro
• EF 85/1.2L (mark I)
• EF 400/5.6L USM

Canon EF zooms
• EF 24-70/2.8L (mark I)
• EF 24-105/4L IS USM
• EF 28-70/3.5-4.5 II
• EF 35-80/4-5.6

Contax N modified by Conurus
• Vario-Sonnar 17-35/2.8
• Vario-Sonnar 24-85/3.5-4.5
• Vario-Sonnar 28-80/3.5-5.6
• Planar 50/1.4
• Planar 85/1.4
• Makro-Sonnar 100/2.8 (Ver.21)
• NAM-1 adapter

Sigma (full frame)
• 24-70/2.8 Ex HSM
• 24-70/2.8 Ex DG HSM
• 50/1.4 DG HSM (Ver.17)
• 50/2.8 DG Macro
• 70-200/2.8 Ex DG Macro HSM
• 100-300/4

Tokina
• AT-x PRO 28-70/2.8

Zeiss ZE
• ZE Distagon 15/2.8
• ZE Distagon 21/2.8
• ZE Distagon 35/2
• ZE Makro-Planar 50/2
• ZE Makro-Planar 100/2

List of manual focus lenses which Require Modification to be used on Speed Booster ULTRA
Many manual focus lenses have rear protrusions (spikes, levers, other appendages) which would damage the optics and/or housing of Speed Booster ULTRA. They need to be modified before they can be safely used on Speed Booster ULTRA. Check and make sure there are no rear protrusions from the adapter/lens combination before using on Speed Booster ULTRA. Scratches and damages caused by rear protrusions or by poor quality adapters are not covered by warranty.

Why Metabones
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, they instead take no short-cut but use precision-machined brass with chromium plating on both the camera-body and the lens sides of their 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. All Metabones Adapters follow this tradition of uncompromising precision, robust build quality and outstanding finish. Metabones new Smart Adapter series of products add industry-leading electronic interfacing technology from Canada, with true electronic control of the lens' aperture directly from the camera body.

• 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 t