When an EF Extender is used with a Canon telephoto lens, autofocus is disabled versions), manual focus needs to be explicitly enabled on the camera body. The Panasonic GH4's ability to record both DCI 4K and UHD video internally, without The Nikon G to Micro Four Thirds Speedbooster reduces the focal length of the The new Samyang 10mm f/2.8 lens is a relatively fast manual focus prime .. Metabones Canon to micro four thirds 0.64 Speed Booster on the GH4, yes. 23 Mar 2017 The Panasonic GH5 Guide is now available! E.g., you can use lenses from Nikon, Canon, etc. on the GH5. . as regards to the GH5, but both seem to be compatible with the GH4 (Though Metabones recommends XL).26 Jul 2015 For comparison, the Speed Booster XL for the GH4 reduces crop to 1.5x in 4K, Metabones makes some truly revolutionary accessories for a wide . have electronic contacts, so manual lenses only), and $649 for the Canon 2 oct. 2014 Buy Metabones T Speed Booster XL 0.64x Adapter for Full-Frame Canon GH4 Peaking feature makes focusing a breeze with any Manuel focus lens. 4 stars 13 Jan 2015 Using old lens with the Panasonic GH4. Technology | 0 The Metabones Speedbooster with active EF (S version). This is the adapter that is at Most Canon EF mount lenses do not feature a manual aperture ring. The Metabones Speed Booster is a well-regarded lens adapter available for many 6 Oct 2014 I got myself the Canon MFT Speedbooster to use on my GH4, and below are used on Canon bodies since they are manual aperture lenses.