Optimized for Panasonic GH4 and GH5. The Speed Booster XL is targeted at Panasonic GH4, GH5, GH5 w/V-Log, and GH5S users. What sets it apart from the standard Canon EF to Micro 4/3 Speed Booster S-Version is its 0.64x focal-length reduction. This effectively reduces the sensor crop factor to 1.28x in still-image capture, and more importantly, 1.5x (Super 35) in 4K video capture.

Lens Compatibility. The adapter allows full-frame Canon EF and third-party EF-mount lenses to be used on compatible Micro 4/3 cameras.

Camera Compatibility. The Speed Booster XL isn’t compatible with all Micro 4/3 cameras. According to Metabones, the only compatible cameras are the Panasonic GH4, GH5S, GH5, Panasonic GH5 w/V-Log, GH3, G3, G5, G6, G7, G9, G10, GF3, GF5, GF6, GX1, GX8, GX80, GX85, Olympus E-PL7, PEN-F, BMCC Micro 4/3 Mount, BMPCC, and BMMCC. If you mount this adapter to any other camera, you could damage the camera’s shutter! This list was last updated on February 25th, 2020. Please check Metabones’ compatibility list for the most up-to-date information.

Wider Focal Length and Increased Aperture. This version of the Speed Booster widens the mounted lens’s focal length by 0.64×. Additionally, the adapter increases the mounted lens’s maximum aperture by 1.3 stops to a maximum of f/0.8 when using an f/1.2 lens.

Electronic Communication. The adapter’s mount has electric contacts that allow you to use compatible lenses’ aperture-control and image-stabilization functions. The adapter doesn’t require a separate power source, and EXIF data is transferred and embedded into your footage.

Sturdy Design with Built-In Tripod Foot. The aluminum barrel and brass mounts give it a solid feel, with an Arca-Swiss compatible tripod foot that lets you mount the adapter itself directly to a tripod. This ensures the lens’s weight doesn’t put additional stress on the camera’s mount.