ADAPTER RING CANON EF TO MFT SPEED BOOSTER XL 0.64X

An EF to Micro 4/3 adapter ring offering 0.64x magnification. Designed for GH5, GH4, GH3, G3, G5, G6, G7, G10, GF3, GF5, GF6, GX1, GX8, GX80/GX85, Olympus E-PL7, PEN-F and Blackmagic Cinema Cameras with MFT, Pocket Cinema Camera and Micro Cinema Camera mounts . The Speed Booster XL 0.64x features an advanced 6-element optical design, for extraordinary performance at apertures up to f/0.80: a new record for the Micro 4/3 format.

The new Speed Booster XL 0.64x reduces the Panasonic GH4's full-format vignetting from 2.0x to 1.28x, achieving an APS-H format. When the GH4 is used in Cinema 4k mode, horizontal full-format vignetting is reduced from 2.34x to 1.50x, transforming the GH4 into a Super 35 format 4k camera. In addition, the speed of each attached lens is increased by 1 1/3 stops, with a maximum output aperture of f/0.80 when an f/1.2 lens is used. For example, a 50mm f/1.2 becomes a 32mm f/0.80, which is the fastest aperture available for the full-size Micro 4/3 format.

Highlights

Optics

Increase maximum aperture by 11/3 stop
Increase MTF
Makes lens 0.64x wider
Patented 6-element/4-group optical design by Caldwell Photographic in the USA
Supports 4k video mode with DX lens (except on GH5)

Electronics

Autofocus
Can be powered either from the camera body or from an external 5V power source (not included)
Iris/aperture controlled from the camera body
Compatible with the smooth iris of the latest Canon lenses (2009+), Tamron (SP series 2013+) and Sigma (2016) lenses
Optical image stabilization (IS) compatibility
Support for cameras with integrated image stabilization (IBIS), including Panasonic GX7, GX8, GX80 / 85 and Olympus cameras
Electronic manual focusing (e.g. EF 85/1.2L II and discontinuous EF 50/1.0L)
EXIF (focal length, aperture, zoom range)
Distance and zoom display on camcorders (requires lenses capable of displaying distance information)
Compatible with EOS cinema lenses (CN-E 18-80mm T4.4 L), including AF (requires external 5V power supply via micro USB port), automatic iris and servo zoom